Electronics > Projects, Designs, and Technical Stuff
Cloning a Commodore PET-2001
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ebastler:

--- Quote from: james_s on June 10, 2018, 05:47:04 pm ---Somebody already did clone the Apple I, not sure about the II, that may be reasonable to try.

--- End quote ---

Right, there are a few modern replicas of the Apple I around. However, I think there is a gap between the Briel Replica I (which claims to be functionally equivalent, but uses some more highly integrated ICs than the original, I believe) and the various 1:1 copies of the PCB. (Those are more like "forgeries" than replicas, in my mind. ::)

As to the Apple II, of course there were plenty of clones back in the day!  ;)
austfox:
Just to let you know that I've been following this thread with interest, and would like to purchase the 2 PCBs for the PET if you ordered multiple boards?
oPossum:

--- Quote from: GK on June 10, 2018, 03:54:05 am ---My most tedious task so far for the TRS-80 project was manually writing the character set binary file.

--- End quote ---

About 20 years ago I wrote an emulator for the TRS-80 Models I/III/4/100/102/200, and Color Computer 1/2/3/MC10. This was a Windows program and I created a Windows bitmap font for use by the emulator. Attached are the source files that where used to generate the fonts. They contain the font ROMs as C arrays. Converting this to whatever format you need would probably require some trivial C code. There are annotations in the source about where the fonts came from and the quirks they have. I have also attached the ROMs for these systems.


GK:

--- Quote from: austfox on June 13, 2018, 02:15:59 am ---Just to let you know that I've been following this thread with interest, and would like to purchase the 2 PCBs for the PET if you ordered multiple boards?

--- End quote ---


Hi, I've got five spare sets of the 2 boards, but can you give me a week or two to finish documentation/b.o.m./tesitng, etc?

GK:

--- Quote from: oPossum on June 13, 2018, 07:24:16 am ---
--- Quote from: GK on June 10, 2018, 03:54:05 am ---My most tedious task so far for the TRS-80 project was manually writing the character set binary file.

--- End quote ---

About 20 years ago I wrote an emulator for the TRS-80 Models I/III/4/100/102/200, and Color Computer 1/2/3/MC10. This was a Windows program and I created a Windows bitmap font for use by the emulator. Attached are the source files that where used to generate the fonts. They contain the font ROMs as C arrays. Converting this to whatever format you need would probably require some trivial C code. There are annotations in the source about where the fonts came from and the quirks they have. I have also attached the ROMs for these systems.
--- End quote ---


It looks like I should have asked here first before compiling my own character ROM binary file!
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