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Routines |
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This, starting at $5847, sets 23 columns of 16 rows to the specified attribute byte.
Used by the routines at pick_up_item, drop_item, event_another_day_dawns, screen_reset, searchlight_mask_test and choose_keys.
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| set_game_window_attributes | A15F | LD HL,$5847 | Point HL at the top-left game window attribute | |||||
| A162 | LD C,$10 | Set rows to 16 | ||||||
| A164 | LD DE,$0009 | Set rowskip to 9 (32 - 23 columns) | ||||||
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Start loop
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| set_game_window_attributes_0 | A167 | LD B,$17 | Set columns to 23 | |||||
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Start loop
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| set_game_window_attributes_1 | A169 | LD (HL),A | Set attribute byte | |||||
| A16A | INC L | Step to the next | ||||||
| A16B | DJNZ set_game_window_attributes_1 | ...loop | ||||||
| A16D | ADD HL,DE | Add rowskip | ||||||
| A16E | DEC C | Decrement row counter | ||||||
| A16F | JP NZ,set_game_window_attributes_0 | ...loop | ||||||
| A172 | RET | Return | ||||||
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