Re: Does anyone have a ROM image from the PET diagnostic pod?

From: Ethan Dicks (
Date: 2008-07-03 07:28:29

On Thu, Jul 3, 2008 at 5:13 AM, William Levak <> wrote:
> On Thu, 3 Jul 2008, Ethan Dicks wrote:
>> Speaking of testsuites, I just grabbed the scans of the C= diagnostic pod
>> documentation from, and since I don't have my
>> authentic pod with me, I was wondering if anyone has an image of the
>> 2K ROM inside?

> I assume you are referring to the device that clips on the CPU.

The very same.  I have an older model at home, but not with me.

> I thought I had uploaded them, but I do not see them at
> There are two versions, one for machines with the 6545, and one for those
> without the 6545.

Makes sense.  I have the pre-6545 one, for sure (along with the
loopback connectors, and the plastic library case - a score from
a long-defunct Commodore dealer).

>  In order for these to work, the CPU, zero page RAM, and
> the video display must be working.

Naturally.  At home, I have tools like the Fluke 9010A that are
very handy for debugging elementary stuff like stuck or shorted
bus drivers, read/write of any address, etc., but again, not with

> I also have some RAM and ROM test routines I have never uploaded.
> These are modifications of the Commodore RAM and ROM test routines.

Those sound quite useful.

I have yet to power up either the 320008 static board or the 320251 dynamic
board, but given how hacked-on the static board was, I'm expecting it not
to come up the first time (among other issues, I received it with zero socketed
parts and while I have a couple of Nicholas Welte's ROM/RAM boards, I have
to fabricate a replacement for the video RAM and chargen ROM.  Fortunately,
the dynamic board is 100% intact, so I'm hoping it will just come up when I
apply power.  In case it doesn't though, I was scouring
for diagnostics.



       Message was sent through the cbm-hackers mailing list

Archive generated by hypermail pre-2.1.8.