3 ms·
IBM BIOS and MS DOS calls used the carry flag as a boolean return or error indicator (the 8086 has instructions for manually setting and resetting it). I don’t
by mananaysiempre 3y ago
IBM BIOS and MS DOS calls used the carry flag as a boolean return or error indicator (the 8086 has instructions for manually setting and resetting it). I don’t think people do that these days except in manually-coded assembly, unfortunately (which the relevant parts of both BIOS and DOS also were of course).