> On Oct 24, 2016, at 4:35 PM, Guy Sotomayor Jr <g...@shiresoft.com> wrote:
>> ...
>
> OK, I guess my last email didn’t make it. It appears to me that the rise
> time is set at 25ns.
>
> You need to look at the PDP-11 UNIBUS Design Description document on
> Bitsavers. Firstly,
> in section 4-1, it specifies which chips to use and recommends not using a
> whole list of other
> chips. The only recommended chips are: 8640, 8641 and 8881.
Sure. But we're trying to understand what is required in order to design
alternatives.
Where do you see the 25 ns spec? I didn't see it (admittedly in a quick scan).
paul
