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Routines |
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Used by the routine at screen_east.
Room numbers are a row in the high nibble and a column in the low. The column is changed on its own so that it wraps without disturbing the row.
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| screen_e_w | CAB3 | AND $0F | the new column with the old row | |
| CAB5 | LD H,A | |||
| CAB6 | LD A,L | |||
| CAB7 | AND $F0 | |||
| CAB9 | OR H | |||
| Prev: CA9A | Up: Map | Next: CABA |