mirror of https://github.com/a2-4am/4cade.git
50 lines
949 B
Plaintext
50 lines
949 B
Plaintext
;license:MIT
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;(c) 2020 by qkumba
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!cpu 6502
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!to "build/PRELAUNCH/ZAXXON",plain
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*=$106
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!source "src/prelaunch/common.a"
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+READ_RAM2_NO_WRITE
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jsr EnableAccelerator
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lda MachineStatus
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pha
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lda MockingboardStuff
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pha
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lda #$60
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sta $41C6
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jsr $4000 ; decompress
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pla
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beq @skip_mb
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pha
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jsr $D15B ; decompress Mockingboard code
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tax
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pla
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ora #$C0
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- ldy $70B, x
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cpy #$C4
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bne +
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sta $70B, x
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+ inx
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bne -
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sta $81D
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@skip_mb
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pla
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and #CHEATS_ENABLED
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beq +
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ldy #$bd
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sty $1a40
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sty $1a61
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+ inc $BF87
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bit $C083
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jsr DisableAccelerator
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ldy #0
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jmp $41D0
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!if * > $1C0 {
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!error "code is too large, ends at ", *
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}
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