osiweb.org

Sure, I'll take photos of both sides on Thursday. It looks just like it was described in the Peek 65 article: a CPU section, a disk section, and a huge area of long complicated traces so it would plug into the 48 pin bus. Like I say, I can't even remember purchasing the board much less doing anythin...

I took a look at the pile of OSI stuff I had in the basement. Big surprise. The CPU board plugged into the bed of nails known as the OSI 48 pin bus was not an OSI board at all. It was a "CXP". A Peek 65 article shows that this was an OSI CPU clone with a nice 65816, 64K of RAM on the board, and a fl...

So... how did this work? I've been comparing the Apple II with OSI stuff and I'm up to the color systems. The Apple II color was an ugly hack, effectively splattering a square wave into the NTSC color subcarrier almost accidentally generating color. Another hack adjusted the phase of the color burst...

After some research, I'm certain the simple disk OS I used was HEXDOS which is described here:

http://www.atarimagazines.com/compute/i ... ARD_II.php

I have a stack of OSI stuff in my basement. I don't know if my C1P is still in there but the C8P (or some variation of it) with gigantic 8" floppy drives is definitely there. I'm scared to plug it in since I see a wax paper-coated transformer whenever I walk past it and it looks like fire to me. Onc...

I've been reading about how the Apple II worked at it's sad that OSI couldn't think of the things that Woz did. Yes, the Apple II cost over twice the C1P but some of these differences would have cost nothing or very little. First, why static RAM? I remember the more expensive OSI systems had dynamic...

What were all my C1P projects? The first thing to do was get the 6502 cranked up to 2 Mhz. This was the earliest form of overclocking I have ever heard of and the issues were the same: keeping the innards cool so they'd be fast enough to keep up. I think the 450 ns 2114's didn't have any problem but...