mirror of
https://github.com/dschmenk/apple2pi.git
synced 2024-12-23 08:29:34 +00:00
81 lines
1.1 KiB
ArmAsm
81 lines
1.1 KiB
ArmAsm
|
;DEBUG = 1
|
||
|
|
;ALTBOOT = 1
|
||
|
|
|
||
|
|
.DEFINE EQU =
|
||
|
|
.DEFINE DB .BYTE
|
||
|
|
.DEFINE DW .WORD
|
||
|
|
.DEFINE PAGE .ALIGN 256
|
||
|
|
.DEFINE ORG .ORG
|
||
|
|
.CODE
|
||
|
|
;*
|
||
|
|
;* ACIA REGISTERS
|
||
|
|
;*
|
||
|
|
ACIADR EQU $C088
|
||
|
|
ACIASR EQU $C089
|
||
|
|
ACIACR EQU $C08A
|
||
|
|
ACIAMR EQU $C08B
|
||
|
|
;*
|
||
|
|
;* APPLE I/O LOCATIONS
|
||
|
|
;*
|
||
|
|
INDCTR EQU $0400
|
||
|
|
MSGLN EQU $07D0
|
||
|
|
KEYBD EQU $C000
|
||
|
|
STROBE EQU $C010
|
||
|
|
XROMOFF EQU $CFFF
|
||
|
|
ROMEN EQU $C082
|
||
|
|
;*
|
||
|
|
;* DRIVER SCRATCHSCRTCH
|
||
|
|
;*
|
||
|
|
SCRTCH0 EQU $0478
|
||
|
|
SCRTCH1 EQU $04F8 ; SYNCED FLAG
|
||
|
|
SCRTCH2 EQU $0578
|
||
|
|
SCRTCH3 EQU $05F8
|
||
|
|
SCRTCH4 EQU $0678
|
||
|
|
SCRTCH5 EQU $06F8
|
||
|
|
SCRTCH6 EQU $0778
|
||
|
|
SCRTCH7 EQU $07F8
|
||
|
|
CMDACK EQU SCRTCH0
|
||
|
|
SYNCED EQU SCRTCH1
|
||
|
|
SAVE16 EQU SCRTCH2
|
||
|
|
IOSLOT EQU $07F8 ; CURRENT SLOT FOR IRQ HANDLING
|
||
|
|
;*
|
||
|
|
;* UTIL ROUTINES
|
||
|
|
;*
|
||
|
|
.IFDEF DEBUG
|
||
|
|
MONITOR EQU $FF69
|
||
|
|
.ENDIF
|
||
|
|
;*
|
||
|
|
;* ZERO PAGE PARAMETERS
|
||
|
|
;*
|
||
|
|
SLOT16 EQU $3C
|
||
|
|
PDCMD EQU $42
|
||
|
|
PDUNIT EQU $43
|
||
|
|
PDBUFF EQU $44
|
||
|
|
PDBUFL EQU $44
|
||
|
|
PDBUFH EQU $45
|
||
|
|
PDBLKL EQU $46
|
||
|
|
PDBLKH EQU $47
|
||
|
|
;*
|
||
|
|
;* PRODOS COMMANDS
|
||
|
|
;*
|
||
|
|
PDSTAT EQU 0
|
||
|
|
PDREAD EQU 1
|
||
|
|
PDWRITE EQU 2
|
||
|
|
PDFORMT EQU 3
|
||
|
|
;*
|
||
|
|
;* PIDRIVE ALTERNATE READ COMMAND
|
||
|
|
;*
|
||
|
|
PIBOOT EQU 4+PDREAD
|
||
|
|
;*
|
||
|
|
;* PRODOS ERRORS
|
||
|
|
;*
|
||
|
|
PDNOERR EQU $00
|
||
|
|
PDIOERR EQU $27
|
||
|
|
PDNODEV EQU $28
|
||
|
|
PDWRPRT EQU $2B
|
||
|
|
;*
|
||
|
|
;* PIDRIVE SYNC and SYNC_ACK
|
||
|
|
;*
|
||
|
|
SYNC_REQ EQU $80
|
||
|
|
SYNC_ACK EQU $81
|