Lars Brinkhoff wrote: > Paul Koning wrote: >>> ... Like what machines other than IBM had binary and decimal computing? >> If you meant "had machine instructions both for decimal and for binary >> arithmetic", the answer includes the PDP-11 and VAX, and I think the >> Intel 4004 had instructions used as building blocks in decimal >> arithmetic. > > The Motorola 68000 has the instructions ABCD, NBCD, and SBCD for > decimal arithmetic. >
The 6502 has a flag bit which allows the programmer to specify whether the ADC and SBC instructions operate on binary or BCD values. What was the question again? Regards, Peter Coghlan.
