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NJS Eprom Expansion Board Instructions for the Microbee - Printable Version

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NJS Eprom Expansion Board Instructions for the Microbee - ChickenMan - 23-01-2020

Thanks to "someone" for providing scans of this document.  After a good cleanup, etc it is now a 5 page A4 size searchable PDF.

The NJS Eprom Expansion Board was a board for early Microbees that fitted inside the Microbee by plugged directly into the EDASM and NET sockets. It provides a total EPROM capacity of 92k ie., 8 banks of 2764 (8k EPROM) and 7 banks of 2532 (4k EPROM) with selection under software control.  It also had an LED option to let you know which Eprom your running.

An example program is provided on how to put a BASIC or machine code program in one of the EPROMs that allows for easy execution from Basic.  Fitting instructions, schematics and general layout are also shown.

So in the Microbee\Documentation\Manuals\Hardware folder, we placed

njs_eprom_expansion_board_instructions.pdf