mirror of https://github.com/a2-4am/4cade.git
35 lines
700 B
Plaintext
35 lines
700 B
Plaintext
;license:MIT
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;(c) 2020, 2022 by qkumba
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!cpu 6502
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!to "build/PRELAUNCH.INDEXED/GHOSTBUSTERS",plain
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*=$106
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!source "src/prelaunch/common.a"
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+ENABLE_ACCEL
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lda #$60
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sta $4075
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jsr $4000 ; decompress
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+READ_RAM2_NO_WRITE
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lda MachineStatus
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and #CHEATS_ENABLED
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beq +
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lda #<callback
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sta $914
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lda #>callback
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sta $915
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+
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jsr DisableAccelerator
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+READ_ROM_NO_WRITE
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jmp $800
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callback
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lda #0
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sta $9D31 ; patch - disable sprite collision
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jmp $9600
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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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