Routines
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64451: Display Frame: Calculate Offset
Used by the routine at DisplayFrame_Copy.
Returns HL = L * 32 + C.
Input
C Column
L Row
Output
HL Offset
DisplayFrame_CalculateOffset 64451 LD H,0
64453 LD B,H
64454 ADD HL,HL
64455 ADD HL,HL
64456 ADD HL,HL
64457 ADD HL,HL
64458 ADD HL,HL
64459 ADD HL,BC
64460 RET
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