mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-29 17:50:18 +00:00
138 lines
3.1 KiB
Plaintext
138 lines
3.1 KiB
Plaintext
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PR#3
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PREFIX /A2OSX.SRC
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NEW
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INC 1
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AUTO 6
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.LIST OFF
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.OP 65C02
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.OR $2000
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.TF /A2OSX.BOOT/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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*--------------------------------------
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ZPTmpPtr1 .EQ ZPDRV
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*--------------------------------------
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SIG.05 .EQ $48
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SIG.07 .EQ $48
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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 #$61 6502,Level 1 (65c02)
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.DA #1 DRV Layout Version 1
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.DA 0
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.DA CS.END-CS.START Code Length
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.DA DEV.HEADER-CS.START Device Header Offset
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.DA DRV.CS.START-CS.START Driver Code Offset
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.DA DRV.CS.END-DRV.CS.START Drv Code Length
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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L.MSG.DETECT .DA MSG.DETECT
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L.MSG.DETECT.OK .DA MSG.DETECT.OK
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L.MSG.DETECT.KO .DA MSG.DETECT.KO
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L.DEV.HEADER.NAME .DA DEV.HEADER.NAME
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.DA 0 End Of Reloc Table
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*--------------------------------------
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Dev.Detect stz ZPTmpPtr1
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lda #$C1
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sta ZPTmpPtr1+1
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.1 ldy #5
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lda (ZPTmpPtr1),y
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cmp #SIG.05
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bne .2
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ldy #7
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lda (ZPTmpPtr1),y
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cmp #SIG.07
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beq .3
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.2 inc ZPTmpPtr1+1
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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 SYS.PSTROutYA
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lda #DEVMGR.ERRNOHW Not Found in any slot, exiting
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sec
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rts
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.3 lda ZPTmpPtr1+1
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sta DEVSLOTCn
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and #$0F
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sta DEVSLOT0n
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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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>LDYA L.MSG.DETECT.OK
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>SYSCALL SYS.PSTROutYA
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>LDYA L.DEV.HEADER.NAME
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>SYSCALL SYS.PSTROutYA
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lda #13
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>SYSCALL SYS.COutA
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clc
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rts
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*--------------------------------------
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CS.END
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MSG.DETECT >PSTRING "Apple Parallel Interface Card.\n"
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MSG.DETECT.OK >PSTRING "PIC Installed As Device : "
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MSG.DETECT.KO >PSTRING "No PIC Found.\n"
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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.F.EVENT+S.DEV.F.COUT+S.DEV.F.CHAR
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DEV.HEADER.NAME >PSTRING "LPT1" NAME
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.HS 00.00
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.HS 00.00.00.00
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*--------------------------------------
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* Driver Code
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*--------------------------------------
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DRV.CS.START .DA OPEN
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.DA GETEVENT
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.DA COUT
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.DA CLOSE
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.DA GETINFO
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.DA IRQ
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L.DEVINFO .DA DEVINFO
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.DA 0 end or relocation
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*--------------------------------------
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OPEN clc
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rts
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*--------------------------------------
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GETEVENT lda #0
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sec
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rts
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*--------------------------------------
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COUT clc
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rts
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*--------------------------------------
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CLOSE clc
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rts
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*--------------------------------------
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GETINFO >LDYA L.DEVINFO
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IRQ 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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DEVINFO .DA #S.DEVINFO.TYPE.CHAR
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.DA #0
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*--------------------------------------
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MAN
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SAVE DRV/PIC.DRV.S
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ASM
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