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FS: Prototype Glitch Works Ohio Scientific Universal RAM Board

Posted: Wed Aug 23, 2017 7:53 pm
by glitch
link: http://www.ebay.com/itm/272817996082

I'm selling some of the prototype boards for my GW-OSI-RAM1 Universal 128 KW RAM board. This board provides up to 128 KW (64 KW without memory management) of static RAM on the Ohio Scientific bus. It supports a 12-bit word size and is compatible with the Ohio Scientific 560Z "Processor Lab" in PDP-8 mode. It also includes a prototyping area, and a header for mezzanine display boards. Included with the auction is a Hex Lamp Register and an Octal Lamp Register, which can be mounted directly to the GW-OSI-RAM1 or used remote on a cable (e.g. for a front panel).

This is a pre-production board, the most significant difference is that it lacks a corner mounting hole, which can be drilled if needed (no circuit traces run under its location). The other differences are minor. See auction link for full description!

Re: FS: Prototype Glitch Works Ohio Scientific Universal RAM Board

Posted: Tue Oct 03, 2017 5:41 pm
by glitch
Listed the last of the prototype boards:

https://www.tindie.com/products/10621/

I'm now using Tindie for my new-made projects since recent eBay policy changes prohibit offsite links to anything except YouTube product reviews, freight billing companies, and "links required for legal reasons." That means I can't even link the manual or GitHub repository! Not acceptable for open source, hobbyist-oriented kit projects.