> On May 24, 2016, at 9:49 PM, Jon Elson <el...@pico-systems.com> wrote:
>
> On 05/24/2016 12:17 PM, Paul Koning wrote:
>> A couple of observations.
>>
>> Taking the PDP-11 as a fairly typical example, the switches are "data" and
>> "address". While running, the data switches were visible to the software,
>> and could do something if you wanted to (typically this wasn't done).
> Actually, all PDP-11s I used had one set of switches, that could be used for
> address or data, as appropriate to the operation.
Oops, of course, you're correct.
paul
