4cade/src/demo/star.blazer.a
2022-09-10 01:36:52 -04:00

57 lines
1.1 KiB
Plaintext

;license:MIT
;(c) 2021 by Frank M.
!cpu 6502
!to "res/DEMO/STAR.BLAZER",plain
*=$300
!source "src/constants.a" ; no code in these
!source "src/macros.a"
+ENABLE_ACCEL
+LOAD_XSINGLE title
lda #$60
sta $722A
sta $725D
jsr $4A58 ; decompress
+DISABLE_ACCEL
jsr $4400
+ENABLE_ACCEL
jsr $B4C6 ; decompress
lda #$4C
sta $17DB
sta $1760
sta $17AD
sta $1705
lda #0
sta $17DB+1
sta $1760+1
sta $17AD+1
lda #1
sta $17DB+2
sta $1760+2
sta $17AD+2 ; set exits
lda #<(count + 1)
sta $1705+1
lda #>(count + 1)
sta $1705+2 ; decrement custom counter after demo cycle and eventually exit
+DISABLE_ACCEL
jmp ($20)
count !byte $03
dec count
bpl +
jmp $100
+ jmp $1750
title !byte x_e-x_b
x_b !text "STAR.BLAZER"
x_e
!if * > $3F0 {
!error "code is too large, ends at ", *
}