March 1, 2019
Updates to the links page
- Julie Porter's amazing port of PT Extended Cassette BASIC to the AVR microcontroller. The github repository also provides a commented reconstruction of the original 8080 asm source.
- Hugo Holden's investigation of the Sol-20 cassette interface
- Hugo Holden's article on solving a Sol-20 lockup problem
January 6, 2018
After a nearly two year delay, I have a few updates. Emails trickle in now and then and I've let a few wait for too long, so here they are.
- John Gord provided the source code to Software Package #1, Resident Assembler.
- The links page has a new entry a link to a Sol-PC owned by Santo Nucifora. The Sol-PC was essentially a Sol-20 motherboard sold standalone. This one was configured into a case with a linear power supply, but it looks nothing like the Sol-20. What a nice find, and a nice presentation.
- I reviewed and removed a number of dead links from the links page.
January 24, 2016
I've reorganized the articles page into sections, and each section is arranged chronologically (as much as it can be known). This was triggered by having more things to add to the page.
- Tom Pinard sent in a scan of a Sol-20 ad from the March, 1977, issue of Ham Radio Horizons Magazine.
- Realizing I was missing many ads, I methodically went through all the issues of Byte Magazine and grabbed all the Procesor Technology ads. I didn't capture duplicates, and sometimes skipped the page containing nothing but the dealer's list (which didn't change that much from the month before). The collection of ads is rather huge due to the large number of color images, which don't compress as well as B&W text.
- While flipping through the Byte Magazines, I found a review of the Sol-20 from April 1978.
December 22, 2015
Over the past year, I've received a number of contributions from various people, but due to a lack of time, they got put off until now. Consider it a Christmas present now.
- Mike Douglas has set up a website, including a section on the Sol-20. It is one to watch!
- Martin Eberhard has been hard at work, creating some very useful drivers and programs for his Helios system.
- Philip Lord patched the program for the ALS8 assembler so it would work properly with the Sol. Both the unpatched and patched versions are available.
- Doug Smythies has scanned three documents which are new to Sol20.org. They are an article by PT founders Lee Felsenstein and Robert Marsh, a Helios II brochure, and the March 1977 Sol Price List.
- Emmanuel Roche found the listing for an original game called 'balloon' written in assembly language for the Sol. He painstakingly retyped the article and the program source. The site now has the article text, the source code, and a virtual disk image of the program.
- The December 1976 issue of Byte Magazine had a review of the VDM-1 video card for S-100 systems.
... (older items are no longer noted) ...
Web site started