4cade/src/demo/labyrinth.a

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;license:MIT
;(c) 2021 by Frank M.
!cpu 6502
!to "res/DEMO/LABYRINTH",plain
*=$310
!source "src/constants.a" ; no code in these
!source "src/macros.a"
+READ_RAM2_WRITE_RAM2
jsr EnableAccelerator
;+LOAD_FILE_KEEP_DIR
ldx #0 ; read to main memory
stx ldrhi
stx ldrlo
+LDADDR title
jsr iLoadFileDirect
+READ_ROM_NO_WRITE
ldx #12-1 ; we also need to copy the length byte
- lda newpath,x
sta $BFD0,x
dex
bpl -
lda #$60
sta $3874
jsr $37F6 ; decompress
lda #$D0
sta $1072
sta $107A ; disable sound
lda #$60
sta $BC41
+DISABLE_ACCEL
jsr $BC00 ; show title animation
lda #$EA
sta $1F00
lda #$A9
sta $1F00+1
lda #$00
sta $1F00+2 ; disable joystick button detection
lda #$4C
sta $1E66
sta $1EE9
sta $8CAA
lda #0
sta $1E66+1
sta $1EE9+1
sta $8CAA+1
lda #1
sta $1E66+2
sta $1EE9+2
sta $8CAA+2 ; set exits
jmp $1E3E
newpath
!byte 11
!text "X/LABYRINTH"
title !byte x_e-x_b
x_b !text "X/LABYRINTH/LABYRINTH"
x_e
!if * > $BFD0 {
!error "code is too large, ends at ", *
}