mirror of
https://github.com/dschmenk/apple2pi.git
synced 2024-11-24 12:31:30 +00:00
81 lines
1.1 KiB
ArmAsm
81 lines
1.1 KiB
ArmAsm
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;DEBUG = 1
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;ALTBOOT = 1
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.DEFINE EQU =
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.DEFINE DB .BYTE
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.DEFINE DW .WORD
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.DEFINE PAGE .ALIGN 256
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.DEFINE ORG .ORG
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.CODE
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;*
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;* ACIA REGISTERS
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;*
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ACIADR EQU $C088
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ACIASR EQU $C089
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ACIACR EQU $C08A
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ACIAMR EQU $C08B
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;*
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;* APPLE I/O LOCATIONS
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;*
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INDCTR EQU $0400
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MSGLN EQU $07D0
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KEYBD EQU $C000
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STROBE EQU $C010
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XROMOFF EQU $CFFF
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ROMEN EQU $C082
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;*
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;* DRIVER SCRATCHSCRTCH
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;*
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SCRTCH0 EQU $0478
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SCRTCH1 EQU $04F8 ; SYNCED FLAG
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SCRTCH2 EQU $0578
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SCRTCH3 EQU $05F8
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SCRTCH4 EQU $0678
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SCRTCH5 EQU $06F8
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SCRTCH6 EQU $0778
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SCRTCH7 EQU $07F8
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CMDACK EQU SCRTCH0
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SYNCED EQU SCRTCH1
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SAVE16 EQU SCRTCH2
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IOSLOT EQU $07F8 ; CURRENT SLOT FOR IRQ HANDLING
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;*
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;* UTIL ROUTINES
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;*
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.IFDEF DEBUG
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MONITOR EQU $FF69
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.ENDIF
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;*
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;* ZERO PAGE PARAMETERS
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;*
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SLOT16 EQU $3C
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PDCMD EQU $42
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PDUNIT EQU $43
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PDBUFF EQU $44
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PDBUFL EQU $44
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PDBUFH EQU $45
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PDBLKL EQU $46
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PDBLKH EQU $47
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;*
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;* PRODOS COMMANDS
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;*
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PDSTAT EQU 0
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PDREAD EQU 1
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PDWRITE EQU 2
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PDFORMT EQU 3
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;*
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;* PIDRIVE ALTERNATE READ COMMAND
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;*
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PIBOOT EQU 4+PDREAD
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;*
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;* PRODOS ERRORS
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;*
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PDNOERR EQU $00
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PDIOERR EQU $27
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PDNODEV EQU $28
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PDWRPRT EQU $2B
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;*
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;* PIDRIVE SYNC and SYNC_ACK
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;*
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SYNC_REQ EQU $80
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SYNC_ACK EQU $81
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