Re: 7501/8501 R/W gate in

From: Frank Wolf <webmaster_at_frank-wolf.org>
Date: Sun, 30 Aug 2020 20:51:31 +0200
Message-ID: <c3793cbd-595c-c611-15a6-d9994752a57d_at_frank-wolf.org>
Just an additional note:

The latched AEC is only used for the R/W# signal...

The address and data but signals are using the unmodified AEC.

But that's it. Finally. No other "magic".

/Frank

> what else is gate_in doing then?
> Another doubt I have is:  does R/W go hi-z as soon as AEC goes low or
> does it go hi-z only at the next gate_in high transition?
> (That would be a really strange latch enable acting on the output enable too...)
>
> Thanks again
> Frank
>
>
Received on 2020-08-30 21:00:57

Archive generated by hypermail 2.3.0.