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79 lines
1.5 KiB
Plaintext
79 lines
1.5 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/PITFALL.II",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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+GAME_REQUIRES_JOYSTICK
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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 $3D34
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jsr $0800 ; decompress
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+RESET_VECTOR reset
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ldx #3-1
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- lda patch,x
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sta $2DF5,x
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lda patch2,x
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sta $2E06,x
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lda patch3,x
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sta $6015,x
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dex
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bpl -
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+DISABLE_ACCEL
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jmp $6000 ;612A copies pages 2E & 2F to AE & AF for final location
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patch !byte $4C,<callback1,>callback1
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patch2 !byte $4C,<callback2,>callback2
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patch3 !byte $4C,<callback3,>callback3
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reset
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+READ_RAM2_NO_WRITE
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jmp ($FFFC)
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callback1
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sec
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sbc #8
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cmp #2
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bcc +
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- jmp $AE0A
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+ jmp $ADF9
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callback2
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sec
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sbc #8
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cmp #2
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bcs -
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jmp $AE21
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callback3
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ldx #6-1
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p1 lda $100, x
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sta $6055, x
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sta $AB43, x
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dex
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bpl p1 ; set demo exits
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lda #$BF
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sta $6021 ; reduce time before demo starts
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lda #$D0
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sta $6299 ; don't lose keypress on return
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jmp $ADE0
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title !byte x_e-x_b
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x_b !text "PITFALL.II"
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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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