Hi!
Thank you so much to all of you for your kind words about the GM Petrosian project, especially to Sascha.
I have tried to understand everything written in German, which is not an easy task.
And I have decided to clarify a few points:
- The first units were designed at 20 or 25 MHz. Later I got a batch of special Motorola CPUs that could run at 32 MHz, so I made some modifications to the original design to make it run at 32MHz in a stable way. If any GM Petrosian owner has a 20/25 MHz unit, and would like to upgrade to 32 MHz, please contact me: It won't be easy because I have very few fast CPUs left, but we can discuss it..
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- The first prototype (#00) is owned by Wolfgang Zugrav, as it is in fact thanks to him that I was able to develop this whole project. I later assembled a prototype for myself, for further experimentation, but it is not for sale.
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- So far I have only assembled 14 units, I do not keep any GM Petrosian for myself, although I'm now assembling unit #15 and it will soon have a new owner.
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- I will be able to assemble maybe one last #16 unit, but I don't think any more. Because all the last batches I'm buying of Motorola 68000 with PLCC package are either counterfeits, or can't run at 32MHz. #16 would be a nice number to end with, don't you think?
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- Units #2 to #14 can operate with DC voltage from 7.5 to 12V. The power consumption is less than 150 mA, and a large part of this is due to the backlit LCD!
Please keep writing in German, don't switch to English because of my post, because thanks to DeepL translator I can follow the conversation.
Best,
Gerardo
ps.- Moltes gràcies a tu, Hans-Jürgen !