mirror of https://github.com/A2osX/A2osX.git
155 lines
3.4 KiB
Plaintext
155 lines
3.4 KiB
Plaintext
NEW
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PREFIX
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AUTO 4,1
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.LIST OFF
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.OP 65C02
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.OR $2000
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.TF DRV/PIC.DRV
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*--------------------------------------
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.INB INC/MACROS.I
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.INB INC/A2OSX.I
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.INB INC/MLI.E.I
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*--------------------------------------
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ZPTmpPtr1 .EQ ZPDRV
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*--------------------------------------
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* File Header (16 Bytes)
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*--------------------------------------
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CS.START cld
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jmp Dev.Detect cld,jmp abs=DRV
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.DA #$61 6502,Level 1 (65c02)
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.DA #1 DRV Layout Version 1
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.DA 0
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.DA CS.END-CS.START Code Length
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.DA DEV.HEADER-CS.START Device Header Offset
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.DA DRV.CS.START-CS.START Driver Code Offset
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.DA DRV.CS.END-DRV.CS.START Drv Code Length
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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L.MSG.DETECT .DA MSG.DETECT
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L.MSG.DETECT.OK .DA MSG.DETECT.OK
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L.MSG.DETECT.KO .DA MSG.DETECT.KO
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L.DEV.HEADER.NAME .DA DEV.HEADER.NAME
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.DA 0 End Of Reloc Table
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*--------------------------------------
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Dev.Detect >STYA ARGS
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>LDYA L.MSG.DETECT
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>SYSCALL PrintF
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stz ZPTmpPtr1
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lda #$C1
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sta ZPTmpPtr1+1
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.1 and #$0f
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tay
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lda A2osX.S,y
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bne .3
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ldx #DEVSIG.Length-1
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.2 ldy DEVSIG.Offset,x
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lda (ZPTmpPtr1),y
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cmp DEVSIG.Value,x
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bne .3
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dex
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bpl .2
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bra .4
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.3 inc ZPTmpPtr1+1 no match, try next slot....
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lda ZPTmpPtr1+1
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cmp #$C8
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bne .1
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>LDYA L.MSG.DETECT.KO
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>SYSCALL PrintF
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lda #MLI.E.NODEV Not Found in any slot, exiting
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sec
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rts
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.4 lda ZPTmpPtr1+1
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and #$0F
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pha
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tay
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lda #A2osX.S.COM
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sta A2osX.S,y
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pla
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ora #$30
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sta DEV.HEADER.NAME+4
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asl
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asl
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asl
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asl
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sta DEVSLOTn0
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>PUSHW L.DEV.HEADER.NAME
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>LDYA L.MSG.DETECT.OK
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>SYSCALL PrintF
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clc
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rts
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*--------------------------------------
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CS.END
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DEVSIG.Offset .HS 0507
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DEVSIG.Value .HS 4848
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DEVSIG.Length .EQ DEVSIG.Value-DEVSIG.Offset
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MSG.DETECT .AZ "Apple PIC (Parallel Interface Card).\r\n"
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MSG.DETECT.OK .AZ "PIC Installed As Device : %S\r\n"
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MSG.DETECT.KO .AZ "No PIC Found.\r\n"
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ARGS .BS 2
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*--------------------------------------
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* Device Header (16 Bytes)
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*--------------------------------------
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DEV.HEADER cld
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jmp (DRV.CS.START,x)
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.DA #S.DEV.S.WRITE
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.BS 6
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DEV.HEADER.NAME >PSTR "LPT1"
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*--------------------------------------
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* Driver Code
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*--------------------------------------
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DRV.CS.START .DA STATUS
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.DA A2osX.BADCALL
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.DA A2osX.BADCALL
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.DA A2osX.BADCALL
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.DA CONTROL
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.DA A2osX.BADCALL
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.DA OPEN
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.DA CLOSE
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.DA A2osX.BADCALL
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.DA WRITE
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L.STAT .DA STAT
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.DA 0 end or relocation
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*--------------------------------------
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STATUS >LDYA L.STAT
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clc
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rts
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*--------------------------------------
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CONTROL
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clc
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rts
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*--------------------------------------
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OPEN
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clc
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rts
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*--------------------------------------
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CLOSE
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clc
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rts
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*--------------------------------------
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WRITE
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clc
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rts
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*--------------------------------------
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DRV.CS.END
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DEVSLOT0n .BS 1
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DEVSLOTCn .BS 1
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DEVSLOTn0 .BS 1
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*--------------------------------------
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STAT .DA #S.DIB.S.WRITE
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.DA #0,#0,#0
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>PSTR "Parallel Card"
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.DA #0,#0,#0
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.DA #S.DIB.T.CHAR
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.DA #0
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.DA $0900
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*--------------------------------------
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MAN
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SAVE /A2OSX/SRC/DRV/PIC.DRV.S
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ASM
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