mirror of
https://github.com/cc65/cc65.git
synced 2024-11-04 17:04:58 +00:00
235 lines
6.3 KiB
ArmAsm
235 lines
6.3 KiB
ArmAsm
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
; ;
|
|
; LOADER.SYSTEM - an Apple][ ProDOS 8 loader for cc65 programs (Oliver Schmidt) ;
|
|
; ;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
A1L := $3C
|
|
A1H := $3D
|
|
STACK := $0100
|
|
BUF := $0200
|
|
PATHNAME := $0280
|
|
MLI := $BF00
|
|
VERSION := $FBB3
|
|
RDKEY := $FD0C
|
|
PRBYTE := $FDDA
|
|
COUT := $FDED
|
|
|
|
QUIT_CALL = $65
|
|
GET_FILE_INFO_CALL = $C4
|
|
OPEN_CALL = $C8
|
|
READ_CALL = $CA
|
|
CLOSE_CALL = $CC
|
|
FILE_NOT_FOUND_ERR = $46
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
.import __CODE_0300_SIZE__, __DATA_0300_SIZE__
|
|
.import __CODE_0300_LOAD__, __CODE_0300_RUN__
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
.segment "DATA_2000"
|
|
|
|
GET_FILE_INFO_PARAM:
|
|
.byte $0A ;PARAM_COUNT
|
|
.addr PATHNAME ;PATHNAME
|
|
.byte $00 ;ACCESS
|
|
.byte $00 ;FILE_TYPE
|
|
FILE_INFO_ADDR: .word $0000 ;AUX_TYPE
|
|
.byte $00 ;STORAGE_TYPE
|
|
.word $0000 ;BLOCKS_USED
|
|
.word $0000 ;MOD_DATE
|
|
.word $0000 ;MOD_TIME
|
|
.word $0000 ;CREATE_DATE
|
|
.word $0000 ;CREATE_TIME
|
|
|
|
OPEN_PARAM:
|
|
.byte $03 ;PARAM_COUNT
|
|
.addr PATHNAME ;PATHNAME
|
|
.addr MLI - 1024 ;IO_BUFFER
|
|
OPEN_REF: .byte $00 ;REF_NUM
|
|
|
|
LOADING:
|
|
.byte $0D
|
|
.asciiz "Loading "
|
|
|
|
ELLIPSES:
|
|
.byte " ...", $0D, $0D, $00
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
.segment "DATA_0300"
|
|
|
|
READ_PARAM:
|
|
.byte $04 ;PARAM_COUNT
|
|
READ_REF: .byte $00 ;REF_NUM
|
|
READ_ADDR: .addr $0000 ;DATA_BUFFER
|
|
.word $FFFF ;REQUEST_COUNT
|
|
.word $0000 ;TRANS_COUNT
|
|
|
|
CLOSE_PARAM:
|
|
.byte $01 ;PARAM_COUNT
|
|
CLOSE_REF: .byte $00 ;REF_NUM
|
|
|
|
QUIT_PARAM:
|
|
.byte $04 ;PARAM_COUNT
|
|
.byte $00 ;QUIT_TYPE
|
|
.word $0000 ;RESERVED
|
|
.byte $00 ;RESERVED
|
|
.word $0000 ;RESERVED
|
|
|
|
FILE_NOT_FOUND:
|
|
.asciiz "... File Not Found"
|
|
|
|
ERROR_NUMBER:
|
|
.asciiz "... Error $"
|
|
|
|
PRESS_ANY_KEY:
|
|
.asciiz " - Press Any Key "
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
.segment "CODE_2000"
|
|
|
|
jmp :+
|
|
.byte $EE
|
|
.byte $EE
|
|
.byte 65
|
|
STARTUP:.res 65
|
|
|
|
; Reset stack
|
|
: ldx #$FF
|
|
txs
|
|
|
|
; Relocate CODE_0300 and DATA_0300
|
|
ldx #<(__CODE_0300_SIZE__ + __DATA_0300_SIZE__)
|
|
: lda __CODE_0300_LOAD__ - 1,x
|
|
sta __CODE_0300_RUN__ - 1,x
|
|
dex
|
|
bne :-
|
|
|
|
; Remove ".SYSTEM" from pathname
|
|
lda PATHNAME
|
|
sec
|
|
sbc #.strlen(".SYSTEM")
|
|
sta PATHNAME
|
|
|
|
; Add trailing '\0' to pathname
|
|
tax
|
|
lda #$00
|
|
sta PATHNAME + 1,x
|
|
|
|
; Copy ProDOS startup filename and trailing '\0' to stack
|
|
ldx STARTUP
|
|
lda #$00
|
|
beq :++ ; bra
|
|
: lda STARTUP + 1,x
|
|
: sta STACK,x
|
|
dex
|
|
bpl :--
|
|
|
|
; Provide some user feedback
|
|
lda #<LOADING
|
|
ldx #>LOADING
|
|
jsr PRINT
|
|
lda #<(PATHNAME + 1)
|
|
ldx #>(PATHNAME + 1)
|
|
jsr PRINT
|
|
lda #<ELLIPSES
|
|
ldx #>ELLIPSES
|
|
jsr PRINT
|
|
|
|
jsr MLI
|
|
.byte GET_FILE_INFO_CALL
|
|
.word GET_FILE_INFO_PARAM
|
|
bcc :+
|
|
jmp ERROR
|
|
|
|
: jsr MLI
|
|
.byte OPEN_CALL
|
|
.word OPEN_PARAM
|
|
bcc :+
|
|
jmp ERROR
|
|
|
|
; Copy file reference number
|
|
: lda OPEN_REF
|
|
sta READ_REF
|
|
sta CLOSE_REF
|
|
|
|
; Get load address from aux-type
|
|
lda FILE_INFO_ADDR
|
|
ldx FILE_INFO_ADDR + 1
|
|
sta READ_ADDR
|
|
stx READ_ADDR + 1
|
|
|
|
; It's high time to leave this place
|
|
jmp __CODE_0300_RUN__
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
.segment "CODE_0300"
|
|
|
|
jsr MLI
|
|
.byte READ_CALL
|
|
.word READ_PARAM
|
|
bcs ERROR
|
|
|
|
jsr MLI
|
|
.byte CLOSE_CALL
|
|
.word CLOSE_PARAM
|
|
bcs ERROR
|
|
|
|
; Copy REM token and startup filename to BASIC input buffer
|
|
ldx #$00
|
|
lda #$B2
|
|
bne :++ ; bra
|
|
: inx
|
|
lda a:STACK - 1,x
|
|
: sta BUF,x
|
|
bne :--
|
|
|
|
; Go for it ...
|
|
jmp (READ_ADDR)
|
|
|
|
PRINT:
|
|
sta A1L
|
|
stx A1H
|
|
ldx VERSION
|
|
ldy #$00
|
|
: lda (A1L),y
|
|
beq :++
|
|
cpx #$06 ; //e ?
|
|
beq :+
|
|
cmp #$60 ; lowercase ?
|
|
bcc :+
|
|
and #$5F ; -> uppercase
|
|
: ora #$80
|
|
jsr COUT
|
|
iny
|
|
bne :-- ; bra
|
|
: rts
|
|
|
|
ERROR:
|
|
cmp #FILE_NOT_FOUND_ERR
|
|
bne :+
|
|
lda #<FILE_NOT_FOUND
|
|
ldx #>FILE_NOT_FOUND
|
|
jsr PRINT
|
|
beq :++ ; bra
|
|
: pha
|
|
lda #<ERROR_NUMBER
|
|
ldx #>ERROR_NUMBER
|
|
jsr PRINT
|
|
pla
|
|
jsr PRBYTE
|
|
: lda #<PRESS_ANY_KEY
|
|
ldx #>PRESS_ANY_KEY
|
|
jsr PRINT
|
|
jsr RDKEY
|
|
jsr MLI
|
|
.byte QUIT_CALL
|
|
.word QUIT_PARAM
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|