On 2017-03-08, at 11:08, Tom Marchant wrote: > On Wed, 8 Mar 2017 09:31:53 -0800, Charles Mills wrote: > >> an 8-bit processor could do 32-bit arithmetic by nibbling off one byte of it >> at a time. > > ITYM "had to" rather than "could". > It probably save hardware to decrement as well as increment in accessing storage. Consider that CLC goes left-to-right but AP goes right-to-left.
But it was mostly software in those days, anyway. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
