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Routines | 
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Used by the routine at B6FD.
 
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| B772 | LD HL,$5DBF | HL=5DBF. | ||
| B775 | LD A,D | A=D. | ||
| B776 | AND %00001111 | Keep only bits 0-3. | ||
| B778 | LD D,A | D=A. | ||
| B779 | ADD HL,DE | HL+=DE. | ||
| B77A | LD A,(HL) | A=*HL. | ||
| B77B | AND %11110000 | Keep only bits 4-7. | ||
| B77D | RET | Return. | ||
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