| Alien (BUGFIX 1.7) | Routines |
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Blacks out the 20×19 room-view attribute window, then renders the grid buffer's wall glyphs into the (now invisible) pixel area — the duct view's arm walk selectively re-colours cells cyan to reveal them.
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| 33395 | LD DE,12 | black out the 20x19 room-view | ||
| 33398 | LD HL,22528 | attribute window | ||
| 33401 | LD C,19 | |||
| 33403 | LD B,20 | |||
| 33405 | LD (HL),0 | |||
| 33407 | INC HL | |||
| 33408 | DJNZ 33405 | |||
| 33410 | ADD HL,DE | +12: next attribute row | ||
| 33411 | DEC C | |||
| 33412 | JR NZ,33403 | |||
| 33414 | LD HL,26121 | then render the grid buffer | ||
| 33417 | CALL 31312 | (DrawRoomBackground_0) | ||
| 33420 | RET | |||
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