mirror of https://github.com/a2-4am/4cade.git
54 lines
1.0 KiB
Plaintext
54 lines
1.0 KiB
Plaintext
;license:MIT
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;(c) 2021-2022 by Frank M., qkumba
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!cpu 6502
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!to "build/PRELAUNCH.INDEXED/STARBALL",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 #<hook
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sta $A1E+1
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lda #>hook
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sta $A1E+2
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jmp $800 ; decompress
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hook ldx #0
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stx $9E52
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inx
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stx $9E53 ; reset vector fix
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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 $BD07
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lda #>callback
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sta $BD08
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+
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jsr DisableAccelerator
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+READ_ROM_NO_WRITE
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jmp $9D84
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callback
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pla
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pla
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jsr $BD5F
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jsr $BD09
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lda $B7EC
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cmp #$15
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bne +
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ldx $B7ED
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dex
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bne +
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lda #$ad
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sta $96DE ; patch - don't decrease balls
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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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