[sdiy] Kurzweil K2000 upgrade

[music at artxtek.com]

I am using a XGecu TL866 Mark2 plus programmer -c heap and cheerful that has successfully burned Eproms.
Will check the burn process etc. I will try programming then read the chip and try running diff on the before and after versions.

Regards Tony
October 6, 2022 11:30 AM, "grant musictechnologiesgroup.com" <grant at musictechnologiesgroup.com (mailto:grant at musictechnologiesgroup.com?to=%22grant%20musictechnologiesgroup.com%22%20<grant at musictechnologiesgroup.com>)> wrote:
My first suspicion is that the GAL chips aren't getting burned correctly. It's hard to find a combination of burner and chip that works in my opinion. On new chips, can you burn the original configuration? At least that gets you a sanity check when burning PLDs. Beware of true or false checksum tests. Been bitten by that myself.

GB

------ Original Message ------
From: "music at artxtek.com (mailto:music at artxtek.com)" <music at artxtek.com (mailto:music at artxtek.com)>
To: "Synth-Diy mailing list" <synth-diy at synth-diy.org (mailto:synth-diy at synth-diy.org)>
Sent: 10/6/2022 7:58:11 AM
Subject: Re: [sdiy] Kurzweil K2000 upgrade

 After searching the internets I finally found the info on how to upgrade a Rev A, B or B2 Engine board that does not have JP7 installed.
I noticed a reference to the upgrade on monotanz.de (https://monotanz.de) - a seller of upgrade ROMs and the site owner sent me a PDF containing the info.

So the K2000 is running Calvin v 3.87 with just one small issue - it locks up after booting up unless it is in diagnostic mode.
It runs all the diagnostic tests repeatedly with no issue but when I boot into "regular" mode it freezes after a few minutes.
Further study of the upgrade notes indicates that an upgrade of the Pseudo and Godot GAL chips is highly recommended to fix "stability issues".

I currently have Pseudo v2.0 and Godot V3.0. I found images for the K2000R on  DBWBP.com (https://DBWBP.com) for Pseudo v5.0 and Godot v5.0 however when I try either or both of these chips the K2000 will not boot at all.

Does anyone have K2000 images for Pseudo v4.0 and Godot v5.0, or am I missing something when I burn the images?

Regards Tony
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