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68 lines
1.1 KiB
Plaintext
68 lines
1.1 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 "res/DEMO/BU",plain
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*=$300
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!source "src/constants.a" ; no code in these
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!source "src/macros.a"
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+ENABLE_ACCEL_LC
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+LOAD_XSINGLE title
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lda #$60
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sta $3ec9
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sta $3f09
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jsr $3e97 ; decompress
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+DISABLE_ACCEL
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ldx #3-1
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- lda patch2,x
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sta $653F,x ; skip joystick/keyboard selection
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dex
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bpl -
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lda #$b1
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sta $646b
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jsr $6400
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+ENABLE_ACCEL
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jsr $811
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ldx #3-1
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- lda patch,x
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sta $9FD3,x
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sta $9FCF,x
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sta $A497,x ; set exits
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dex
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bpl -
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inx
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stx $A30A
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stx $A15B
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stx $A16A
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stx $A17B
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stx $A1D0 ; disable sound
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inx
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stx $A30F ; reset vector patch
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+DISABLE_ACCEL
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jmp $a300
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patch !byte $4C,$00,$01
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patch2 !byte $4C,$8D,$65
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title !byte x_e-x_b
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x_b !text "BU"
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x_e
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!if * > $3F0 {
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!error "code is too large, ends at ", *
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}
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