mirror of https://github.com/a2-4am/4cade.git
61 lines
1.2 KiB
Plaintext
61 lines
1.2 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/PULSAR.II",plain
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*=$106
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!source "src/prelaunch/common.a"
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callback0
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+ENABLE_ACCEL
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lda #<callback1
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sta $7B7B
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lda #>callback1
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sta $7B7C
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jmp $3FF8 ; decompress
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callback1
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jsr $BE00
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+GET_MACHINE_STATUS
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and #CHEATS_ENABLED
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beq +
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lda #$ad
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sta $9400 ; patch - don't decrease lives
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+
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lda #<callback2
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sta $A6AD
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lda #>callback2
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sta $A6AE
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+DISABLE_ACCEL
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rts
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;Worm Wall section
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callback2
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+ENABLE_ACCEL
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lda #<callback3
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sta $6E41
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lda #>callback3
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sta $6E42
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jmp $3FF8 ; decompress
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callback3
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jsr $BE00
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+GET_MACHINE_STATUS
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and #CHEATS_ENABLED
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beq +
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lda #$ad
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sta $1C43 ; patch - don't decrease lives
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+
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lda #<callback0
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sta $B757
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lda #>callback0
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sta $B758
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+DISABLE_ACCEL
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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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