126 lines
2.5 KiB
ArmAsm
126 lines
2.5 KiB
ArmAsm
;license:MIT
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;(c) 2018 by qkumba
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!cpu 6502
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*=$2000
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!to "build/GRUE.SYSTEM",plain
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!source "src/constants.a"
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lda $BF98 ; machine identification byte
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and #$30
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cmp #$30 ; 128K?
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bne QuitToProDOS ; no, quit to ProDOS
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!byte $1a ; 65C02 INC, clear Z flag if supported
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beq QuitToProDOS ; not a 65C02
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- jsr $bf00
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op_c7
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!byte $c7
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!word runme+c7_parms-reloc
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ldx runme+prefix-reloc
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bne +
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lda $bf30
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sta c5_parms+1
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jsr $bf00
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!byte $c5
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!word c5_parms
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ldx runme+prefix+1-reloc
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inx
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txa
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and #$0f
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sta runme+prefix-reloc
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lda #$2f
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sta runme+prefix+1-reloc
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dec op_c7
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bne -
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+ lda #<prefix
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sta runme+c6_parms+1-reloc
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lda #>prefix
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sta runme+c6_parms+2-reloc
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lda $c083
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lda $c083
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ldy #0
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- lda runme,y
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sta $d100,y ;$d1 heh.
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sta $1000,y
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iny
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bne -
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jmp $1000
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QuitToProDOS
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jsr $bf00
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!byte $65
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!word quit_parms
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quit_parms
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!byte 4
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c5_parms
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!byte 2
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!byte 0
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!word runme+prefix+1-reloc
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runme !pseudopc $1000 {
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reloc cld
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lda $c082
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sta $c00c
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sta $c000
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jsr $fe93
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jsr $fe89
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sta $4fb
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jsr $fb2f
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jsr $fc58
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ldx #$df
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lda #$cf
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- sta $be79,x
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lda #0
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txs
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inx
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bne -
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inc $bf6f
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jsr $bf00
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!byte $c6
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!word c6_parms
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jsr $bf00
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!byte $c8
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!word c8_parms
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lda c8_parms+5
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sta ca_parms+1
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jsr $bf00
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!byte $ca
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!word ca_parms
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jsr $bf00
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!byte $cc
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!word cc_parms
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jmp kPitchDarkBinaryAddress
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c7_parms
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c6_parms
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!byte 1
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!word runme+prefix-reloc
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c8_parms
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!byte 3
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!word filename
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!word $800
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!byte 0
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ca_parms
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!byte 4
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!byte $d1
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!word kPitchDarkBinaryAddress
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!word $ffff
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!word $34d1
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cc_parms
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!byte 1
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!byte 0
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filename
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!byte (filename_e-filename)-1
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!text "PITCH.DARK"
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filename_e
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prefix
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}
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