Vintage Computer Festival Shows Off Ancient PCs

Markgor writes "Just finished looking through some pictures from the recent Vintage Computer Festival in Marlboro, Massachussetts, the first time that it's been held on the East coast. The best pic has to be the one of the Sol-20. Here in Ottawa, we have a bunch of vintage computers sitting in one of our museums, including an Altair, but I haven't seen an intact Sol-20 in a long long time"

Comments

Processor Tech Sol

[glitch!]

The SOL was quite a computer :-) I first learned 8080 assembly language on one.

Correction, machine language... I didn't have an assembler at the time, so I photocopied the 8080 instruction set page (note singlular) and went from there. One side of the page had the opcodes and the hex values, the other had the inverse so you could look up an opcode by hex value.

In the time when everyone was selling their $100 to $500 BASIC, Processor Tech gave away their "5k basic" in source code form. Imagine that :-) I still have my paper copy somewhere... Years later, I translated it into 8086 code, in case anyone is interested :-)

Yep, that was a beauty and a beast. The video card had 1k of RAM, mapped as 64x16. What's interesting about the video is that you could reprogram the character bitmaps so that you could get custom "graphics" on that screen, and a clever programmer could do FAST graphics by changing some critical character definitions at the right time.

Don't forget the Northstar floppy disk system. The disks were hard-sectored, so you couldn't just get the ones from Radio Shack to work. I had to drive to the next town to buy one - and they were $5 each at the time...

(Four Yorkshiremen can start any time now :-)