dos33fsprogs/demos/demosplash2022/logo_intro.s
2022-11-13 01:07:13 -05:00

31 lines
652 B
ArmAsm

;================================
; draw the sorta vectored logo
;================================
; 908 bytes -- first display
; 916 bytes -- scroll down
; 914 bytes -- assume < 256 co-ords
; 908 bytes -- assume first co-oord is an HPLOT
; 906 bytes -- save value on stack rather than ZP
; discontinuity when improving the sound code
; 2BD bytes -- after really optimizing the draw code
show_logo:
; 101 0000
lda #80
sta LETTER_Y
ldx #$7 ; color white
lda #1 ; apple rotation
jsr draw_logo
lda #$20 ; switch HGR draw page
sta HGR_PAGE
lda #88
sta LETTER_Y
ldx #$0 ; color black
lda #63 ; apple rotation
jsr draw_logo