Re: PET 2001N $E8xx data bus conflict?

From: Francesco Messineo <*francesco.messineo_at_gmail.com*> Date: Mon, 16 Apr 2018 22:59:33 +0200 Message-ID: <CAESs-_wwq8KLc44XUowkzw8oBOM4B-SfWs7_U4Srxp04nwOjLQ@mail.gmail.com> · francesco.messineo_at_gmail.com

On Mon, Apr 16, 2018 at 10:53 PM, Steve Gray <sjgray@rogers.com> wrote:
> Am 16. April 2018 10:12:19 PM schrieb Francesco Messineo
>
>
> <francesco.messineo@gmail.com>:
>
>
>> Anyway, on the universal board, $Exxx ROM is selected by /SELE and
>> X8XX combined, so one could use a 2532 ROM in place of the 2316 and
>> add some code too.
>
>
> Which has indeed exactly been done for the internationalized versions of
> the later PET.
>
> André
>
> Or even new custom-built Editor ROMs ;-)      (shameless plug!)

and indeed in the second revision of my own RAM/ROM board, I added the
logic to remove only $E8XX from ROM space like in later PETs.

Frank