| 226 | } |
| 227 | |
| 228 | void |
| 229 | vga_backsp(void) |
| 230 | { |
| 231 | int col, row; |
| 232 | |
| 233 | col = curcol; /* Character cell row and column */ |
| 234 | row = currow; |
| 235 | |
| 236 | if (col > 0) |
| 237 | col = col - 1; |
| 238 | vga_gotoloc(col, row); |
| 239 | } |
| 240 | |
| 241 | void |
| 242 | vga_clear_screen(int colour) |