On Thu, Nov 5, 2015 at 8:18 PM, Guy Sotomayor <g...@shiresoft.com> wrote: > * The expansion bus in the IBM PC was the same bus as the System/23. The > connector was rotated 180* so that some of the less expensive > cards from the PC couldn't be used in the System/23. The other > reason for this was since the IBM PC was done on a "shoe string" > budget, they could take the System/23 cards and only had to do some > minimal re-layout of the board.
Did the System/23 also use edge-triggered interrupts, rather than level? Do you have any idea why it was thought a good idea to use edge-triggered interrupts?
