2018-01-21 20:55:01 +00:00
|
|
|
|
|
|
|
|
const pointer screen = $400
|
|
|
|
|
const byte row = 15
|
|
|
|
|
|
|
|
|
|
byte letter_index
|
|
|
|
|
|
|
|
|
|
void main () {
|
2018-12-17 10:13:01 +00:00
|
|
|
#if CBM_64_CRT
|
|
|
|
|
vic_bg_color0 = blue
|
|
|
|
|
vic_border = light_blue
|
|
|
|
|
vic_cr1 = $9b
|
|
|
|
|
vic_mem = $15
|
|
|
|
|
vic_cr2 = $c8
|
|
|
|
|
#endif
|
2018-01-21 20:55:01 +00:00
|
|
|
letter_index = 0
|
|
|
|
|
disable_irq()
|
|
|
|
|
init_screen()
|
|
|
|
|
main_loop()
|
|
|
|
|
}
|
|
|
|
|
void init_screen() {
|
|
|
|
|
byte i
|
|
|
|
|
for i,0,paralleluntil,250 {
|
|
|
|
|
screen[i+000] = logo[i-000]
|
|
|
|
|
screen[i+250] = logo[i+250]
|
|
|
|
|
screen[i+500] = logo[i+500]
|
|
|
|
|
screen[i+750] = logo[i+750]
|
|
|
|
|
c64_color_ram[i+000] = logo_colours[i+000]
|
|
|
|
|
c64_color_ram[i+250] = logo_colours[i+250]
|
|
|
|
|
c64_color_ram[i+500] = logo_colours[i+500]
|
|
|
|
|
c64_color_ram[i+750] = logo_colours[i+750]
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void main_loop() {
|
|
|
|
|
static byte scroll
|
|
|
|
|
scroll = 7
|
|
|
|
|
while true {
|
|
|
|
|
while vic_raster != row * 8 - 1 + 50 {}
|
2019-08-06 10:59:05 +00:00
|
|
|
stabilize(9)
|
2018-01-21 20:55:01 +00:00
|
|
|
vic_38_columns()
|
|
|
|
|
vic_set_scroll(scroll, 3)
|
|
|
|
|
while vic_raster != row * 8 + 7 + 50 {}
|
2019-08-06 10:59:05 +00:00
|
|
|
stabilize(22)
|
2018-01-21 20:55:01 +00:00
|
|
|
vic_40_columns()
|
|
|
|
|
vic_set_scroll(0,3)
|
|
|
|
|
if scroll == 0 {
|
|
|
|
|
scroll = 7
|
|
|
|
|
hardscroll()
|
|
|
|
|
} else {
|
|
|
|
|
scroll -= 1
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
asm void stabilize(byte x){
|
|
|
|
|
burn:
|
|
|
|
|
DEX
|
|
|
|
|
BNE burn
|
|
|
|
|
RTS
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void hardscroll() {
|
|
|
|
|
byte i
|
|
|
|
|
for i,0,until,39 {
|
|
|
|
|
screen[40 * row + i] = screen[40 * row + i + 1]
|
|
|
|
|
}
|
|
|
|
|
screen[40 * row + 39] = scroll_text[letter_index]
|
|
|
|
|
letter_index += 1
|
|
|
|
|
if letter_index == scroll_text.length {
|
|
|
|
|
letter_index = 0
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2019-04-29 20:57:40 +00:00
|
|
|
const array scroll_text = [
|
2018-01-21 20:55:01 +00:00
|
|
|
"this is a simple scroller demo written in millfork. " scr,
|
|
|
|
|
"as you can see, you don't need assembly to do simple effects. " scr,
|
|
|
|
|
" " scr
|
|
|
|
|
]
|
|
|
|
|
|
2019-04-29 20:57:40 +00:00
|
|
|
const array logo = [
|
2018-01-21 20:55:01 +00:00
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,
|
|
|
|
|
32,32,32,32,32,108,123,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,108,224,224,123,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,225,97,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,225,97,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,108,32,32,32,225,97,32,225,252,108,224,32,251,236,32,225,97,32,32,225,97,32,32,225,236,226,126,108,236,251,123,225,236,251,123,225,97,254,126,
|
|
|
|
|
108,224,98,98,98,254,97,32,225,236,236,224,32,225,97,32,225,97,32,32,225,97,32,32,225,252,123,32,225,97,225,97,225,252,254,126,225,224,126,32,
|
|
|
|
|
124,224,226,226,226,226,126,32,225,97,32,224,32,225,97,32,225,97,32,32,225,97,32,32,225,97,32,32,225,97,225,97,225,236,252,32,225,236,252,32,
|
|
|
|
|
32,124,32,32,32,32,32,32,124,126,32,226,32,226,226,32,124,226,226,126,124,226,226,126,124,126,32,32,32,226,226,32,124,126,124,126,124,126,124,126,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,82,70,64,68,69,68,64,70,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,
|
|
|
|
|
32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32
|
|
|
|
|
]
|
|
|
|
|
|
2019-04-29 20:57:40 +00:00
|
|
|
const array logo_colours = [
|
2018-01-21 20:55:01 +00:00
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
|
|
|
|
|
14,14,14,14,14,5,5,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,5,5,5,5,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,5,5,5,14,14,14,0,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,5,5,14,0,14,0,0,14,0,14,0,0,0,14,0,0,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,5,14,14,14,5,5,14,0,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
|
|
|
5,5,5,5,5,5,5,14,0,0,0,0,14,0,0,14,0,0,14,14,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,14,
|
|
|
|
|
5,5,5,5,5,5,5,14,0,0,0,0,14,0,0,14,0,0,0,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
|
|
|
14,5,5,14,14,14,14,14,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,0,14,14,14,0,0,0,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
|
|
|
|
|
14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14
|
|
|
|
|
]
|
