Re: wherefor art thou, senior PROM?

[Mike Maginnis <maginnis@computist-project.net>]

On Tue, 21 Aug 2007 02:39:53 -0700, jonnosan <jonnosan@gmail.com>
wrote:

>> The Senior PROM is a hardware device that replaces the standard ROMS
>> in an Apple IIe. Specifically, it's a NMI card with some extra
>> features built in.  I have one, though the ROMs on mine are designed
>> to work with an unenhanced IIe and it gets a little wonky when
>> installed in an enhanced unit.  I'd be willing to lend it to someone
>> for reverse-engineering, if there's any interest.
>
>What does the wonkiness involve? I only have a platinum iie - if
>someone is able to capture the code on these ROMs, is there any chance
>of it working in my setup?
>
>Regards
>
>Jonno

It gets erratic.  Sometimes it locks up the machine, other times the
wrong menu comes up when the switch is thrown.  Other times, you just
get garbage characters across the screen.  Sometimes, nothing at all
happens when you activate it.

Cutting Edge Enterprises did apparently make a single chip version
that worked in  later-model IIe's with the CF ROM, but I've never seen
one.

Mike Maginnis
maginnis@computist-project.net

The Computist Project
http://computist-project.net