megadrive_test2
annotate src/main.c @ 1:2560a8be8cb8
hblank interrupt test
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Tue, 14 Mar 2017 09:02:43 +0200 |
| parents | ce1b05082ac4 |
| children | 1d35c3b3a525 |
| rev | line source |
|---|---|
| nuclear@1 | 1 #include <stdint.h> |
| nuclear@0 | 2 #include "vdp.h" |
| nuclear@0 | 3 |
| nuclear@0 | 4 int main(void) |
| nuclear@0 | 5 { |
| nuclear@0 | 6 vdp_init(); |
| nuclear@0 | 7 |
| nuclear@1 | 8 vdp_set_pal_entry(0, 0, 0, 0, 0); |
| nuclear@0 | 9 vdp_set_pal_entry(0, 1, 7, 0, 3); |
| nuclear@0 | 10 vdp_set_bgcolor(0, 1); |
| nuclear@0 | 11 |
| nuclear@1 | 12 vdp_enable_hintr(12); |
| nuclear@1 | 13 vdp_enable_vintr(); |
| nuclear@1 | 14 |
| nuclear@0 | 15 for(;;); |
| nuclear@0 | 16 |
| nuclear@0 | 17 return 0; |
| nuclear@0 | 18 } |
| nuclear@1 | 19 |
| nuclear@1 | 20 uint16_t testcol = 0x00c0; |
| nuclear@1 | 21 |
| nuclear@1 | 22 void hblank_handler(void) |
| nuclear@1 | 23 { |
| nuclear@1 | 24 vdp_set_pal_entry(0, 1, ~testcol, 0, testcol); |
| nuclear@1 | 25 testcol = ~testcol; |
| nuclear@1 | 26 } |
| nuclear@1 | 27 |
| nuclear@1 | 28 void vblank_handler(void) |
| nuclear@1 | 29 { |
| nuclear@1 | 30 testcol = 0x00c0; |
| nuclear@1 | 31 } |