IBM System/32 available

Eric Smith spacewar at
Mon Nov 9 14:26:02 CST 2015

On Thu, Nov 5, 2015 at 8:18 PM, Guy Sotomayor <ggs at> 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?

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