This was a follow-on of BG Computer's 64K static RAM board. The boards
were quite similar, though this board did not have an onboard
"coin" type standby battery the 64K board had.
This board was very well thought out. Besides all the then usual
IEEE-696 features such as 8/16 bit data transfers, 24 bit extended
addressing, Phantom line detection and the ability to mix RAM and ROM
chips, the board could be configured in numerous ways to utilize bank select
features for MPM, OASIS, AMOS I & II, and CHROMIX, I, II and D. You
could even program EEPROMS. There was battery backup/standby
capability as well. The board utilized 3 custom PAL's to obtain
all these features.
Setting the board up requires careful reading of the manual. There are some
diagram errors for the jumper locations K7, K8 and K9 but they become
obvious when you see the board itself.
The manual for this board can be obtained
here.
