245 lines
6.8 KiB
NASM
245 lines
6.8 KiB
NASM
|
;
|
||
|
|
; File:
|
||
|
|
; printer.asm
|
||
|
|
; Description:
|
||
|
|
; Printer device driver
|
||
|
|
;
|
||
|
|
; Copyright (c) 1998
|
||
|
|
; Pasquale J. Villani
|
||
|
|
; All Rights Reserved
|
||
|
|
;
|
||
|
|
; This file is part of DOS-C.
|
||
|
|
;
|
||
|
|
; DOS-C is free software; you can redistribute it and/or
|
||
|
|
; modify it under the terms of the GNU General Public License
|
||
|
|
; as published by the Free Software Foundation; either version
|
||
|
|
; 2, or (at your option) any later version.
|
||
|
|
;
|
||
|
|
; DOS-C is distributed in the hope that it will be useful, but
|
||
|
|
; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
||
|
|
; the GNU General Public License for more details.
|
||
|
|
;
|
||
|
|
; You should have received a copy of the GNU General Public
|
||
|
|
; License along with DOS-C; see the file COPYING. If not,
|
||
|
|
; write to the Free Software Foundation, 675 Mass Ave,
|
||
|
|
; Cambridge, MA 02139, USA.
|
||
|
|
;
|
||
|
|
; $Header$
|
||
|
|
;
|
||
|
|
|
||
|
|
%include "io.inc"
|
||
|
|
|
||
|
|
%define PRT_TIMEOUT 01h
|
||
|
|
%define PRT_IOERROR 08h
|
||
|
|
%define PRT_SELECTED 10h
|
||
|
|
%define PRT_OUTOFPAPER 20h
|
||
|
|
%define PRT_ACK 40h
|
||
|
|
%define PRT_NOTBUSY 80h
|
||
|
|
|
||
|
|
%define PRT_WRITECHAR 00h
|
||
|
|
%define PRT_INITPORT 01h
|
||
|
|
%define PRT_GETSTATUS 02h
|
||
|
|
|
||
|
|
segment _IO_FIXED_DATA
|
||
|
|
|
||
|
|
global LptTable
|
||
|
|
LptTable db 18h
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOCommandError
|
||
|
|
dw _IOSuccess
|
||
|
|
dw _IODone
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw PrtWrite
|
||
|
|
dw PrtWrite
|
||
|
|
dw PrtOutStat
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw PrtOutBsy
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw PrtGenIoctl
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOExit
|
||
|
|
dw _IOCommandError
|
||
|
|
dw _IOCommandError
|
||
|
|
|
||
|
|
|
||
|
|
segment _IO_TEXT
|
||
|
|
global uPrtNo
|
||
|
|
uPrtNo db 0
|
||
|
|
uPrtQuantum dw 50h
|
||
|
|
dw 50h, 50h
|
||
|
|
db 50h, 00h
|
||
|
|
|
||
|
|
PrtWrite:
|
||
|
|
jcxz PrtWr3 ; Exit if nothing to write
|
||
|
|
|
||
|
|
PrtCharLoop: ; next character loop
|
||
|
|
|
||
|
|
mov bx, 2 ; number of retries
|
||
|
|
PrtRetryTwice:
|
||
|
|
mov ah, PRT_GETSTATUS ; get status, ah=2
|
||
|
|
call PrtIOCall ;
|
||
|
|
jnz PrtWr4
|
||
|
|
|
||
|
|
mov al,[es:di]
|
||
|
|
|
||
|
|
mov ah, PRT_WRITECHAR ; print character, ah=0
|
||
|
|
call PrtIOCall ; (0800)
|
||
|
|
|
||
|
|
jnz PrtWr4 ; NZ = error, retry
|
||
|
|
|
||
|
|
inc di
|
||
|
|
loop PrtCharLoop ; next character
|
||
|
|
PrtWr3:
|
||
|
|
jmp _IOExit
|
||
|
|
PrtWr4: ; repeat
|
||
|
|
dec bx
|
||
|
|
jnz PrtRetryTwice
|
||
|
|
PrtWr5:
|
||
|
|
jmp _IOErrCnt
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
PrtOutStat:
|
||
|
|
call GetPrtStat
|
||
|
|
jnz PrtWr5
|
||
|
|
mov al, E_PAPER
|
||
|
|
test ah, PRT_OUTOFPAPER
|
||
|
|
jnz PrtWr5
|
||
|
|
test ah, PRT_NOTBUSY
|
||
|
|
jnz PrtWr3
|
||
|
|
jmp _IODone
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
GetPrtStat:
|
||
|
|
mov ah,PRT_GETSTATUS
|
||
|
|
|
||
|
|
PrtIOCall:
|
||
|
|
call GetUnitNum
|
||
|
|
int 17h ; print char al, get status ah
|
||
|
|
|
||
|
|
mov al, ah ; if (stat & 0x30) == 0x30 return 10;
|
||
|
|
and al, PRT_SELECTED|PRT_OUTOFPAPER
|
||
|
|
cmp al, PRT_SELECTED|PRT_OUTOFPAPER
|
||
|
|
mov al, E_WRITE
|
||
|
|
je ret_error_code
|
||
|
|
|
||
|
|
test ah, PRT_OUTOFPAPER|PRT_IOERROR|PRT_TIMEOUT ; 29h
|
||
|
|
mov al, E_NOTRDY
|
||
|
|
jz ret_error_code
|
||
|
|
|
||
|
|
test ah, PRT_OUTOFPAPER ; 20h
|
||
|
|
mov al, E_WRITE
|
||
|
|
jz ret_error_code ; not out of paper -> E_WRITE
|
||
|
|
|
||
|
|
ret_error_code_9:
|
||
|
|
mov al, E_PAPER
|
||
|
|
|
||
|
|
ret_error_code:
|
||
|
|
cmp al, E_NOTRDY ; 2 = no error
|
||
|
|
retn
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
PrtOutBsy:
|
||
|
|
push ds
|
||
|
|
push es
|
||
|
|
pop ds
|
||
|
|
mov si,di
|
||
|
|
PrtOtBsy1:
|
||
|
|
push cx
|
||
|
|
push bx
|
||
|
|
xor bx,bx
|
||
|
|
mov bl,[cs:uPrtNo]
|
||
|
|
shl bx,1
|
||
|
|
mov cx,[cs:uPrtQuantum+bx]
|
||
|
|
pop bx
|
||
|
|
PrtOtBsy2:
|
||
|
|
call GetPrtStat
|
||
|
|
jnz PrtOtBsy3
|
||
|
|
test ah, PRT_NOTBUSY
|
||
|
|
loopz PrtOtBsy2
|
||
|
|
pop cx
|
||
|
|
jz PrtOtBsy4
|
||
|
|
lodsb
|
||
|
|
xor ah,ah
|
||
|
|
call PrtIOCall
|
||
|
|
jnz PrtOtBsy4
|
||
|
|
loop PrtOtBsy1
|
||
|
|
pop ds
|
||
|
|
lds bx,[cs:_ReqPktPtr]
|
||
|
|
sub [bx+12h],cx
|
||
|
|
jmp _IOExit
|
||
|
|
PrtOtBsy3:
|
||
|
|
pop cx
|
||
|
|
PrtOtBsy4:
|
||
|
|
pop ds
|
||
|
|
lds bx,[cs:_ReqPktPtr]
|
||
|
|
sub [bx+12h],cx
|
||
|
|
jmp _IOErrorExit
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
PrtGenIoctl:
|
||
|
|
les di,[cs:_ReqPktPtr]
|
||
|
|
cmp byte [es:di+0Dh],5
|
||
|
|
je PrtGnIoctl2
|
||
|
|
PrtGnIoctl1:
|
||
|
|
jmp _IOCommandError
|
||
|
|
PrtGnIoctl2:
|
||
|
|
mov al,[es:di+0Eh]
|
||
|
|
les di,[es:di+13h]
|
||
|
|
xor bx,bx
|
||
|
|
mov bl,[cs:uPrtNo]
|
||
|
|
shl bx,1
|
||
|
|
mov cx,[cs:uPrtQuantum+bx]
|
||
|
|
cmp al,65h
|
||
|
|
je PrtGnIoctl3
|
||
|
|
cmp al,45h
|
||
|
|
jne PrtGnIoctl1
|
||
|
|
mov cx,[es:di]
|
||
|
|
PrtGnIoctl3:
|
||
|
|
mov [cs:uPrtQuantum+bx],cx
|
||
|
|
mov [es:di],cx
|
||
|
|
jmp _IOExit
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
;
|
||
|
|
; some comments to last changes (TE, 23/09/01)
|
||
|
|
;
|
||
|
|
; original implementation didn't print at all - on my machine,LPT2
|
||
|
|
;
|
||
|
|
; maybe this one is not much better either,
|
||
|
|
; but should print a little bit
|
||
|
|
;
|
||
|
|
; the status bits = AH
|
||
|
|
;
|
||
|
|
; 1 0
|
||
|
|
; 80 - BUSY not busy busy
|
||
|
|
; 40 - ACK transfer finished not yet finished
|
||
|
|
; 20 - PAP no paper available paper OK
|
||
|
|
; 10 - ONOF printer online not online
|
||
|
|
; 08 - ERR some error no error
|
||
|
|
; 01 - TIM some error when transfer OK
|
||
|
|
;
|
||
|
|
; some states
|
||
|
|
; 30 - there is no printer at all
|
||
|
|
; c8 - there is a printer without power
|
||
|
|
; 10 - printer with power, but not initialized
|
||
|
|
; 90 - this one is fine
|
||
|
|
;
|
||
|
|
; you must not simply print without asking for status
|
||
|
|
; as the BIOS has a LARGE timeout before aborting
|
||
|
|
;
|