mirror of
https://github.com/nippur72/apple1-videocard-lib.git
synced 2024-08-14 11:28:59 +00:00
18 lines
629 B
C
18 lines
629 B
C
// clears all the sprites
|
|
void tms_clear_sprites() {
|
|
// fills first sprite pattern with 0
|
|
tms_set_vram_write_addr(TMS_SPRITE_PATTERNS);
|
|
for(byte i=0;i<8;i++) {
|
|
TMS_WRITE_DATA_PORT(0);
|
|
}
|
|
|
|
// set sprite coordinates to (0,0) and set pattern name 0
|
|
tms_set_vram_write_addr(TMS_SPRITE_ATTRS);
|
|
for(byte i=0;i<32;i++) {
|
|
TMS_WRITE_DATA_PORT((6+i)*8); NOP; NOP; NOP; NOP; // y coordinate
|
|
TMS_WRITE_DATA_PORT((6+i)*8); NOP; NOP; NOP; NOP; // x coordinate
|
|
TMS_WRITE_DATA_PORT(0); NOP; NOP; NOP; NOP; // name
|
|
TMS_WRITE_DATA_PORT(i); NOP; NOP; NOP; NOP; // color
|
|
}
|
|
}
|