HPAVC/HPAVC CD-ROM.iso/BNU202.ZIP/FTTY.ASM

Assembly Source File | 1989-06-02 | 3KB | 210 lines

;
; Glass TTY via FOSSIL
;

COM equ 1

; Allows TASM to assemble this file

ifdef ??version
    masm51
    quirks
endif

include keyasm.h

_code segment byte
  if COM
    org    0100H
  endif
    assume cs:_code
_start:
  if COM
    assume ds:_code, es:_code
  else
    mov ax,cs
    mov ds,ax
    assume ds:_code
  endif
    jmp _begin

port    dw 0
isansi    dw 0

copr    db 'Glass-TTY Terminal Program via FOSSIL driver V 1.00',13,10
    db 'Copyright (C) 1992  David Nugent & Unique Computing Pty Ltd',13,10
    db 'Press Alt-F10 for assistance',13,10
_copr    equ $
abrt    db 'Abort - no FOSSIL driver loaded!',13,10,'$'
help    db 27,'[2J',27,'[0;0H',27,'[47;30m'
shelp    db 13
    db ' - Keys Help --------------------- ',13,10
    db '|                                 |',13,10
    db '|  Alt-X     Exit Terminal        |',13,10
    db '|  Alt-C     Clear screen         |',13,10
    db '|  Alt-F10   Display Help Screen  |',13,10
    db '|                                 |',13,10
    db ' --------------------------------- ',13,10
_shelp    equ $
    db 27,'[0m'
_help    equ $
a_cls    db 27,'[2J',0
a_ncol    db 27,'[0m',0
a_test    db 27,'[1;80H',0
__test    db 8,8,8,8,8,8,8,0
a_warn    db 7, 'WARNING: No ANSI driver present!',13,10, 0
_begin:
    mov ah,04H            ; Init FOSSIL
    mov dx,port
    int 014H
    cmp AX,01954H
    je @F
    mov dx,offset abrt
    mov ah,9
    int 021H
    mov al,1
    jmp _quit

@@:
    mov DX,offset a_test
    call ansi
    mov AH,12H
    int 014H
    cmp DX,0079
    je @F
    mov DX,offset __test
    call ansi
    jmp SHORT @C
@@:
    mov isansi,1
    mov DX,offset a_cls
    call ansi
    mov DX,offset a_ncol
    call ansi
@C:
    mov DX,offset copr
    mov CX,_copr - copr
    call strdisp
    cmp isansi,1
    je _main
    mov DX,offset a_warn
    call ansi
_main:
    mov ah,0cH            ; Peek character from modem
    mov dx,port
    int 014H
    cmp ax,-1
    je @F
    mov ah,02H
    mov dx,port
    int 014H
    mov ah,13H
    int 014H
@@:
    mov ah,0DH            ; Test keyboard for character
    int 014H
    cmp ax,-1
    je _main
    mov ah,0eH
    int 014H
    or al,al
    jne _ontty
    cmp ax,altx
    je _exit
    cmp ax,altf10
    je _dhelp
    cmp ax,altc
    je _cls
    jmp _main
_cls:
    cmp isansi,0
    jne @R
    mov CX,25
    mov AX,130AH
@@:
    push AX
    int 014H
    pop AX
    loop @B
    mov AX,130DH
    int 014H
    jmp _main
@R:
    mov dx,offset a_cls
    call ansi
    jmp _main
_dhelp:
    cmp isansi,0
    jne @F
    mov dx,offset shelp
    mov cx,_shelp - shelp
    jmp SHORT @I
@@:
    mov dx,offset help
    mov cx,_help - help
@I:
    call strdisp
    jmp _main

_ontty:
    mov ah,01H
    mov dx,port
    int 014H
    jmp _main

_exit:
    mov ah,05H
    mov dx,port
    int 014H
    xor al,al
_quit:
    mov AH,04cH
    int 021H

;
; Display an ansi sequence
;

ansi:
    push si
    push ax
    push cx
    mov si,dx
    xor cx,cx
@@:
    lodsb
    or al,al
    je @F
    inc cx
    jmp @B
@@:
    call strdisp
    pop cx
    pop ax
    pop cx
    ret

;
; Display a string to screen via FOSSIL
;
strdisp:
    push si
    push dx
    push ax
    push cx
    mov si,dx
@@:
    lodsb
    mov ah,13H
    int 014H
    loop @B
    pop cx
    pop ax
    pop dx
    pop si
    retn

_code ends

end _start