megadrive_test1
annotate src/main.s @ 2:51d1d6761601
copied the bgset code from samurai's article to test that my dev setup is
actually working
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Mon, 30 Jan 2017 16:57:51 +0200 |
| parents | 909c22dc18d2 |
| children |
| rev | line source |
|---|---|
| nuclear@0 | 1 .text |
| nuclear@0 | 2 .global main |
| nuclear@0 | 3 main: |
| nuclear@2 | 4 move.l #0xc00000, %a0 |
| nuclear@2 | 5 move.l #0xc00004, %a1 |
| nuclear@2 | 6 move.w #0xc000, (%a1) |
| nuclear@2 | 7 move.w #0, (%a1) |
| nuclear@2 | 8 move.w #0x1f8, (%a0) |
| nuclear@2 | 9 move.w #0x8700, (%a1) | set bg color to 0 |
| nuclear@2 | 10 move.w #0x8004, (%a1) |
| nuclear@2 | 11 move.w #0x8144, (%a1) | enable display |
| nuclear@0 | 12 rts |