mirror of https://github.com/a2-4am/4cade.git
89 lines
1.6 KiB
Plaintext
89 lines
1.6 KiB
Plaintext
;license:MIT
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;(c) 2021 by Frank M.
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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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+READ_RAM2_WRITE_RAM2
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jsr EnableAccelerator
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;+LOAD_FILE_KEEP_DIR
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ldx #0 ; read to main memory
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stx ldrhi
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stx ldrlo
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+LDADDR title
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jsr iLoadFileDirect
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ldx #5-1 ; we also need to copy the length byte
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- lda newpath,x
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sta $BFD0,x
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dex
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bpl -
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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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jsr DisableAccelerator
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+READ_ROM_NO_WRITE
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lda #$4C
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sta $653F
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lda #$8D
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sta $653F+1
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lda #$65
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sta $653F+2 ; skip joystick/keyboard selection
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lda #$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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lda #0
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sta $A30A
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lda #1
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sta $A30F ; reset vector patch
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lda #$4C
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sta $9FD3
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sta $9FCF
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sta $A497 ; set exits
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lda #0
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sta $9FD3+1
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sta $9FCF+1
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sta $A497+1
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sta $A15B
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sta $A16A
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sta $A17B
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sta $A1D0 ; disable sound
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lda #1
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sta $9FD3+2
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sta $9FCF+2
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sta $A497+2
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+DISABLE_ACCEL
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jmp $a300
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newpath
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!byte 4
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!text "X/BU"
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title !byte x_e-x_b
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x_b !text "X/BU/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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