DEC bus transceivers
paulkoning at comcast.net
Mon Oct 24 15:41:04 CDT 2016
> On Oct 24, 2016, at 4:35 PM, Guy Sotomayor Jr <ggs at 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).
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