The JOHN OLIGER COMPANY is offering several experimenter boards for the Timex/Sinclair 2068. They include a User Cartridge Board, with empty sockets for eproms (2 2764s or 2 27128s), an Expansion Board, complete with an RGB monitor interface circuit and a feedthrough rear edge connector, and the just recently announced 2068 Eprom Programmer. While the User Cartridge Board utilizes the cartridge slot in the side compartment of the TS 2068, the Expansion Board plugs into the rear edge connector. Other boards like the 2068 Eprom Programmer (and ones that will be released in the future) plug into the Expansion Board. The Eprom Programmer also requires the optional Vpp Power Supply Board, or similar power supply.
All of the John Oliger Co. products are available as a bare printed circuit board (you supply the parts), or as a kit with parts, and also fully assembled and tested. The instructions for the kits are fairly limited (includes a schematic) and are most likely not designed for the first time kit builder.
Also to be available soon, is a Centronics type parallel printer interface board for the TS 2068. There are also some experimenter boards available for the TS 1000/ZX81.
For further information on the boards, and a current price list, please send a S.A.S.E. to: The John Oliger Co., 11601 Whidbey Dr., Cumberland, IN, 46229.