mirror of https://github.com/A2osX/A2osX.git
310 lines
5.8 KiB
Plaintext
310 lines
5.8 KiB
Plaintext
NEW
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AUTO 3,1
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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/kernel.i
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.INB inc/mli.e.i
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.INB inc/com.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 #$61 6502,Level 1 (65c02)
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.DA #1 DRV Layout Version 1
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.DA 0
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.DA CS.END-CS.START Code Length
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.DA 0
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.DA #32 SS
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.DA #2 ZP
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.DA 0
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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L.MSG.DETECT .DA MSG.DETECT
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L.MSG.DETECT.OK .DA MSG.DETECT.OK
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L.MSG.DETECT.KO .DA MSG.DETECT.KO
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L.DRV.CS.START .DA DRV.CS.START
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L.FD.DEV .DA FD.DEV
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L.FD.DEV.NAME .DA FD.DEV.NAME
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.DA 0 End Of Reloc Table
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*--------------------------------------
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Dev.Detect >STYA ARGS
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>LDYA L.MSG.DETECT
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>SYSCALL PutS
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stz ZPTmpPtr1
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lda #$C1
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sta ZPTmpPtr1+1
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.1 and #$0f
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tay
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lda A2osX.S-1,y
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bne .3
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ldx #DEVSIG.Length-1
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.2 ldy DEVSIG.Offset,x
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lda (ZPTmpPtr1),y
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cmp DEVSIG.Value,x
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bne .3
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dex
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bpl .2
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bra .4
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.3 inc FD.DEV.NAME+3
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inc ZPTmpPtr1+1 no match, try next slot....
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lda ZPTmpPtr1+1
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cmp #$C8
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bne .1
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>LDYA L.MSG.DETECT.KO
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>SYSCALL PutS
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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-1,y
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pla
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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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.8 >PUSHW L.MSG.DETECT.OK
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>PUSHW L.FD.DEV.NAME
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>PUSHBI 2
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>SYSCALL PrintF
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>PUSHWI DRV.END
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>PUSHWI DRV.CS.END-DRV.CS.START
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>PUSHWI DRV.CS.START
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>LDYA L.DRV.CS.START
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>SYSCALL InsDrv
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bcs .9
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>STYA FD.DEV+S.FD.DEV.DRVPTR
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>PUSHW L.FD.DEV
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>PUSHW L.FD.DEV.NAME
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>SYSCALL MKDev
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.9 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 .CZ "Apple PIC (Parallel Interface Card)"
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MSG.DETECT.OK .CZ "PIC Installed As Device : %s\r\n"
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MSG.DETECT.KO .CZ "No PIC Found."
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ARGS .BS 2
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*--------------------------------------
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FD.DEV .DA #S.FD.T.CDEV
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.DA #0 HANDLER
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.DA #0 BUSID
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.DA #0 DEVID
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.DA 0 BUSPTR
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.BS 2 DRVPTR
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.DA 0 DCBPTR
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.DA 0 BUFPTR
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FD.DEV.NAME .AZ "lpt1"
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*--------------------------------------
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* Driver Code
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*--------------------------------------
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PIC.WDATA .EQ $C080
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PIC.WSTROBE .EQ $C082
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PIC.RCTRL .EQ $C083
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PIC.RACK .EQ $C084
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PIC.STROBE500 .EQ $C085 pin 13 ????
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PIC.IRQEN .EQ $C086
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PIC.IRQDIS .EQ $C087 Reset ACK, DIS AutoStrobe
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*--------------------------------------
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ZPIOCTL .EQ ZPDRV
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ZPBufPtr .EQ ZPDRV+2
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ZPCount .EQ ZPDRV+4
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*--------------------------------------
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DRV.CS.START cld
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jmp (.1,x)
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.1 .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 READ
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.DA WRITE
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.DA 0 end or relocation
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*--------------------------------------
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STATUS jsr STATUS.CONTROL.Init
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ldy #S.IOCTL.S
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lda (ZPIOCTL),y
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beq .1
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cmp #S.IOCTL.S.GETDIB
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bne STATUS.DCB
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ldy #S.DIB-1
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.HS 2C bit abs
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.1 ldy #3
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.2 lda DIB,y
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sta (ZPBufPtr),y
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dey
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bpl .2
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clc
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rts
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STATUS.DCB cmp #S.IOCTL.S.GETDCB
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bne .3
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ldy #S.DCB.COM-1
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.2 lda DCB,y
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sta (ZPBufPtr),y
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dey
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bpl .2
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clc
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rts
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.3 cmp #S.IOCTL.S.EOF
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bne STATUS.9
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lda DIB+S.DIB.S
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and #S.DIB.S.OPENED
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beq OPEN.E
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.8 clc
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rts
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STATUS.9 lda #MLI.E.BADCTL
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sec
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rts
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*--------------------------------------
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CONTROL jsr STATUS.CONTROL.Init
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ldy #S.IOCTL.C
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lda (ZPIOCTL),y
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cmp #S.IOCTL.C.SETDCB
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bne STATUS.9
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ldy #S.DCB.COM-1
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.2 lda (ZPBufPtr),y
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sta DCB,y
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dey
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bpl .2
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*--------------------------------------
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OPEN lda DIB+S.DIB.S
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bit #S.DIB.S.OPENED
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beq OPEN.1
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OPEN.E lda #MLI.E.OPEN
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sec
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rts
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OPEN.1 ldx DEVSLOTn0
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stz PIC.IRQDIS,x
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lda #S.DIB.S.OPENED
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tsb DIB+S.DIB.S
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clc
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rts
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*--------------------------------------
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CLOSE lda #S.DIB.S.OPENED
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trb DIB+S.DIB.S
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clc
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rts
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*--------------------------------------
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READ jsr READ.WRITE.Init
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clc
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rts
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*--------------------------------------
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WRITE jsr READ.WRITE.Init
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.1 inc ZPCount
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bne .2
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inc ZPCount+1
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beq .8
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.2 lda (ZPBufPtr)
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inc ZPBufPtr
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bne .3
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inc ZPBufPtr+1
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.3 sta PIC.WDATA,x
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* sta PIC.WSTROBE,x
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bra .1
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.8 clc
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rts
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*--------------------------------------
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READ.WRITE.Init ldx DEVSLOTn0
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STATUS.CONTROL.Init
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>STYA ZPIOCTL
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ldy #S.IOCTL.BUFPTR
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lda (ZPIOCTL),y
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sta ZPBufPtr
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iny
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lda (ZPIOCTL),y
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sta ZPBufPtr+1
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iny #S.IOCTL.BYTECNT
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lda (ZPIOCTL),y
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eor #$ff
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sta ZPCount
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iny
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lda (ZPIOCTL),y
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eor #$ff
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sta ZPCount+1
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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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DIB .DA #S.DIB.S.WRITE+S.DIB.S.READ
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.DA #0,#0,#0
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.PS "Apple // Int Crd"
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.DA #S.DIB.T.CHAR
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.DA #0
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.DA K.VER
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*--------------------------------------
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DCB .DA #S.DCB.T.COM
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.DA #0 FLAGS
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.DA 0
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.DA #0
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.DA #0
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.DA #0
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.DA #0
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*--------------------------------------
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DRV.END
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MAN
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SAVE usr/src/drv/pic.drv.s
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ASM
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