View Full Version : Vic-20 Circuit Board image showing chip layout?

January 28th, 2008, 04:52 PM

I've trolled the Internet but I can't find a diagram of a Vic-20 Mainboard showing the chip layouts (either version). Can anyone point me in the direction of one?

January 28th, 2008, 05:14 PM
Try... http://www.zimmers.net

January 28th, 2008, 11:13 PM
Try... http://www.zimmers.net
More specifically, go under Commodore -> FTP Area and browse to schematics/computers/vic20. However, these images are not really pictures of circuit boards, but true schematics. It may take a little while to orientate yourself, but it is an excellent source once you found what is what.

As a side note, many of the GIF files found in the Zimmers' FTP archive are not possible to open with MSIE 6.0 browser. Firefox, some external GIF viewer or possibly MSIE 7 will open them fine. I don't know why, probably they adhere to some GIF variant not supported by the built-in picture viewer in older MSIE.

January 29th, 2008, 12:27 AM
Thanks for the URL. I had been there before and seen the schematics but couldn't find any chip layout diagram.

It seems such a thing is not easily found on the net.

January 29th, 2008, 08:39 AM
Nice graphics of VIC-20 motherboard:

January 29th, 2008, 12:28 PM
Very nice image of the original release board. Thanks!

I'm also after an image of the second configuration used in later versions of the Vic-20, if anyone knows where it might lurk.