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Routines |
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Used by the routines at TITLE_SCREEN and START_GAME.
Bitmap, attributes, and then an OUT to port $FE with zero, which sets the border black. The whole screen gone in three calls.
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| CLEAR_SCREEN | 80AA | CALL CLEAR_ATTRIBUTES | ||
| 80AD | CALL CLEAR_DISPLAY | |||
| 80B0 | XOR A | |||
| 80B1 | OUT ($FE),A | |||
| 80B3 | RET | |||
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