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Routines |
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Used by the routine at chk_facing_W.
Shared by chk_facing_S and chk_facing_W: walk if already facing that way, or turn by bit 0 of the facing code without inverting it.
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| chk_facing_sw_result | C8E5 | JR Z,flag_forward | already facing: walk; otherwise turn | |
| C8E7 | JR turn_by_parity | |||
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