mirror of https://github.com/a2-4am/4cade.git
47 lines
1000 B
Plaintext
47 lines
1000 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.INDEXED/FROGGER.II",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 $6068
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jsr $6000 ; decompress
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lda #$4C
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sta $B04A
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lda #<callback
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sta $B04B
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lda #>callback
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sta $B04C
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+DISABLE_ACCEL
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jmp $800
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callback
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+ENABLE_ACCEL
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jsr $B050
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+GET_MACHINE_STATUS
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and #CHEATS_ENABLED
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beq ++
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ldx #$A5
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lda $B158
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cmp #$30
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bne +
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stx $A1C8 ; patch - don't decrease lives
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bne ++
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+ cmp #$31
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bne +
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lda #$BD
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sta $FB3 ; patch - don't decrease lives
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bne ++
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+ stx $9A35 ; patch - don't decrease lives
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++ +DISABLE_ACCEL
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jmp ($B04E)
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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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