Examples 6.15.5 Binary 16-bit subtractor HB LB Z1: minuend 16 bit 0-65535 ($FFFF) BM00.01+ BM00.00 Z2: subtrahend 16 bit 0-65535 ($FFFF) BM00.03+ BM00.02 Z3: difference 16 bit 0-65535 ($FFFF) BM00.05+ BM00.04 HB: high byte HB LB LB: + Z1 HB LB BM00.03 + BM00.02 Z2 Z3 BM00.05 + BM00.04 Binary subtractor Program LD BM00.00 ;Z1 minuend SUBD BM00.02 ;Z2 subtrahend =D BM00.04 ;Z3 difference 134