Re: PET2001-2316-board with 2532 / 2716 possible?

From: William Levak <*wlevak_at_SDF.ORG*> Date: Fri, 14 Apr 2017 09:43:58 +0000 (UTC) Message-ID: <Pine.NEB.4.64.1704140940220.7514@sdf.lonestar.org> · wlevak_at_SDF.ORG

A PET 2001 will not use a floppy drive. There is a video signal on the 
IEEE connector that interferes with floppy operation. This was corrected 
on later models.

On Wed, 12 Apr 2017, vossi wrote:

> Hi,
> I have a 2001 with 7x 2316 ROMs.
> I want to replace them by 3x2532 and a 2716 for edit-rom to build in the
> bugfixed Basic with floppy access ;)
>
> After watching the schematics it should be possible:
>
> I have to put the 4k-eproms in H1, H2, H4 and a 2716 in H3.
> Pin 20 / CE is the same (for C / D / E / F - segment).
> +5V goes to Pin 21 / VPP.
> BA11 goes to Pin 18 / A11 of the 2532 and selects the upper or lower part.
> The 2716 has a second CE at Pin 18 and will be only activated from E000-E7FF
> (BA11).
>
> Has anyone tried this?
>
> greets
> Christian
>
>
>
> --
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>
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wlevak@sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org

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