mirror of https://github.com/a2-4am/4cade.git
61 lines
1.3 KiB
Plaintext
61 lines
1.3 KiB
Plaintext
;license:MIT
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;(c) 2020 by qkumba
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!cpu 6502
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!to "build/PRELAUNCH.INDEXED/MI",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 #<callback
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sta $916F
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lda #>callback
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sta $9170
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jmp $5B00 ; decompress
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callback
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+GET_MACHINE_STATUS
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and #CHEATS_ENABLED
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beq +
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dec $7822 ; patch - don't increase lives
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lda #<cheat
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sta $B418
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lda #>cheat
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sta $B419
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+ +DISABLE_ACCEL
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jmp $1183
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cheat
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+ENABLE_ACCEL
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jsr $BD00
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lda $B43B
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cmp #$0a
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bne +
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dec $8F0E ; patch - don't decrease lives
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beq ++
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+ cmp #$0c
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bne +
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dec $9DC6 ; patch - don't decrease lives
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beq ++
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+ cmp #$0f
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bne +
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dec $99BB ; patch - don't decrease lives
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beq ++
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+ cmp #$11
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bne ++
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dec $87CC ; patch - don't decrease lives
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dec $88DF ; patch - don't decrease lives
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dec $99BB ; patch - don't decrease lives
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++ +DISABLE_ACCEL
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clc
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rts
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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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