osiweb.org

I have uploaded "Bills Micro Services" Memory Map for C1 in PDF format.

Steve

I have uploaded the OSI Disk and Cassette software handout in PDF format 600dpi (since the text is quite small).

Steve

I have uploaded the Omega Science OSI dealer price list for Sept 1980 in PDF format. This is the place I bought my C4P... (you can see the invoice on my web page )

Steve

I have uploaded Aardvark Lightpen for C1 instructions in PDF format.

Steve

Hi, What monitors are people using these days. In the day I had the OSI C4P but always connected it to a composite monochrome monitor. Looking at the 540B schematics I see that there is actually RGB output from the board. Has anyone tried connecting something like a Commodore 1902, 1080, 1084 etc mo...

I also have 527 and 502 schematics which I can do the same way if needed.

Steve

Both have been scanned at 600dpi 8-bit greyscale, jpg. I'm uploading them now. These are the raw pages from my binder with a few of my handwritten notes. If you want to wait I will clean them up and make PDF's, or you can use them as-is if you have the space or there is demand.

Steve

I have 540/542 rev B schematics in my OSI binder... will scan them for you this week.

Steve

Any news or progress on this? Looking forward to seeing a finished product!

Steve

Well, sadly it doesn't. The listing said something like "tested voltage of power supply"... and I believed it. My mistake. It did have voltage... about 12V. Unfortunately it's supposed to be 5V. No telling what might have fried. Cosmetically, the board does look ok. It's a revision B. There is a "Su...