2019-10-11 01:58:04 +00:00
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;license:MIT
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;(c) 2019 by 4am
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!cpu 6502
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!to "build/PRELAUNCH/TWERPS",plain
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*=$106
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!source "src/prelaunch/common.a"
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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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2019-10-11 23:47:10 +00:00
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sta <($100-end_patch+patch),x
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2019-10-11 01:58:04 +00:00
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dex
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bpl -
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lda #($100-end_patch+patch)
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sta $1DF6
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lda #$00
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sta $1DF7
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jmp $1D97 ; decompress and show title
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patch
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lda #0 ; SMC
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beq +
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2019-10-11 13:57:18 +00:00
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; lives in $14FE
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2019-10-11 01:58:04 +00:00
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lda #$AD
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sta $0640 ; patch - don't decrease lives
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sta $0774 ; patch - don't decrease lives
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sta $0F05 ; patch - don't decrease lives
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+
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jmp $0400
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end_patch
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2019-12-13 05:51:54 +00:00
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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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