FS: Prototype Glitch Works Ohio Scientific Universal RAM Board
Posted: Wed Aug 23, 2017 7:53 pm
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!
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!