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Hi Gary, If that corrosion has not eaten away too much of the traces, a bit of 000 steel wool, an RMA flux pen, and a bit of solder may clean up those traces. If you have some broken traces, they are easily repaired using 30-ga wire-wrap wire in the great OSI tradition, unless you're a stickler for ...

@john: Nice diagram. @falter: Given the number of projects you manage to take on, I think you will not regret picking up a scope. At the moment the best bang for the buck is probably the Rigol ds1054z . For $399, you get a 4-channel 50MHz digital scope with decent usability. Check out the extensive ...

Hi, and welcome to the forum. Yes, you'll be using a Null Modem Cable. Regarding board function and serial port config, do you happen to have access to even a very simple oscilloscope? It will be a big help. Can you post pictures of the red/black wires you're referring to? It looks like the ACIA clo...

I'm keeping some notes here for future reference when processing scanned files. I found the following command useful for taking a bunch of image files scanned 2-up and rotating 90 degress, then splitting the 2-up scan into separate pages (down the middle) and combining into a single PDF: convert -ve...

Hi Pete, and welcome to the forum. I love a good restoration story with a happy ending. I had not heard of the Premier Publications enhancements back in the day, in Memphis TN, USA, but am impressed with their output. As Mike suggested, it would be awesome if you have a chance to dump the Premier BA...

Manuel has uploaded an amazing stash of Premier Publications ROMS, along with manuals for everything, readme files, and photos. I'm turning the documentation into PDFs, and will otherwise ZIP up the package as he created it. He also included photos of the ROMs in his system, which incorporates a ROM...

Looks like a nicely tricked out unit.

http://www.ebay.com/itm/ohio-scientific ... 2060762797

Great to hear!

Also, it would be awesome if you are able to make images of the Pegasus software disks, particularly FBASIC.

Be sure to click the "software" link. . .

I was kidding about the 300, but only partly--I did see your demo of Zork on the Apple 1 at VCF East 9.1, and was very impressed. It would be awesome to get a v3 z-machine up and running for the OSI C1/2/4 platforms. The 400 series CPU boards are pretty rare, but the 500 systems (C2/4/8) are not too...