mirror of https://github.com/a2-4am/4cade.git
41 lines
992 B
Plaintext
Executable File
41 lines
992 B
Plaintext
Executable File
;license:MIT
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;(c) 2019 by 4am/Frank M.
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!cpu 6502
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!to "build/PRELAUNCH.INDEXED/THRESHOLD",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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+NEW_RESET_VECTOR $BFF0
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+GET_MACHINE_STATUS
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and #CHEATS_ENABLED
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sta patch+1
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ldx #(end_patch-patch-1) ; copy patch code to zero page (stack will be destroyed by the time we need to patch)
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- lda patch,x
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sta <($100-end_patch+patch),x
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dex
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bpl -
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lda #($100-end_patch+patch)
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sta $39F4
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lda #$00
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sta $39F5
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jmp $0800 ; decompress
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patch
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lda #0 ; SMC
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beq +
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; lives in $778F
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lda #$AD
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sta $45B0 ; patch - don't decrease lives
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sta $7ECD ; patch - don't increase lives
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+
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+DISABLE_ACCEL
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jmp $6B00
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end_patch
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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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