mirror of https://github.com/a2-4am/4cade.git
54 lines
1.3 KiB
Plaintext
Executable File
54 lines
1.3 KiB
Plaintext
Executable File
;license:MIT
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;(c) 2019 by 4am/qkumba/Frank M.
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!cpu 6502
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!to "build/PRELAUNCH.INDEXED/XEVIOUS",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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+READ_RAM2_WRITE_RAM2
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lda #<reset
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sta $FFFC
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sta $3F2 ; $3F3/3F4 already set to page 1
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lda #>reset
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sta $FFFD ; reset vector patch
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+GET_MACHINE_STATUS
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and #CHEATS_ENABLED
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sta patch2+1
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lda #<patch1
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sta $35E4
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lda #>patch1
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sta $35E5
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jmp $34AA ; decompress 1
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reset
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+READ_ROM_NO_WRITE
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jmp $FAA6
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patch1
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+DISABLE_ACCEL
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lda #<patch2
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sta $ACE8
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lda #>patch2
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sta $ACE9
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jmp $AC48 ; decompress 2/first title
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patch2
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lda #0 ; SMC
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beq +
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; lives in $602B
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lda #$AD
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sta $6414 ; patch - don't decrease lives
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sta $6A8C ; patch - don't increase lives
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sta $750D ; patch - don't increase lives
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sta $894F ; patch - don't increase lives
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+
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jmp $0600 ; play demo/start game
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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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