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Data |
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Indexed by bit 7 of X times two plus bit 7 of Y. Each routine loads H with dY and L with dX, so the names read dY first: p4_m4 is dY +4, dX -4.
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| dX_dY_tbl | B58B | DEFW p4_m4 | X low, Y low: dX -4, dY +4 | |
| B58D | DEFW p4_p4 | X low, Y high: dX +4, dY +4 | ||
| B58F | DEFW m4_m4 | X high, Y low: dX -4, dY -4 | ||
| B591 | DEFW m4_p4 | X high, Y high: dX +4, dY -4 | ||
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