" ╧PCODE: ├═╨" -----------""╧PERATION: ├═╨ AFFECTS THREE FLAGS"ONLY, LEAVING REGISTERS AND DATA"INTACT. ╘HE ACCUMULATOR IS NOT"CHANGED. ╘HE BYTE AT THE ADDRESS"SPECIFIED BY THE OPCODE IS SUBTRACTED"FROM ┴, AND THE THREE FLAGS ╬,┌, AND ├"SET DEPENDING ON THE RESULT. ╘HUS, IF"THE ACCUMULATOR HOLDS THE SAME VALUE"AS THE MEMORY LOCATION, THE RESULT IS"ZERO, AND ┬┼╤ CAUSES THE APPROPRIATE"ACTION TO BE TAKEN. ┬EFORE PERFORMING"THE SUBTRATION, THE CARRY BIT IS SET"BY THE CHIP. ╫ITHIN THE CHIP, WHAT"HAPPENS IS THAT THE ACCUMULATOR'S"CONTENTS ARE ADDED TO THE 2'S"COMPLEMENT OF THE DATA, AND THE RESULT"OF THIS DETERMINES HOW THE FLAGS ARE"SET.""ZZZZZÇ
