Graphic 12K PROM/RAM Board
This board held the monitor software
with such routines as system boot and printer drivers.
Vector Graphic's PROM RAM III Board was
a versatile, S-100 bus compatible, memory board combining EPROM's with a small
amount of RAM. Of unique thing about the board was that you could use the board
to actually program a 2708 EPROM on the board itself. 1K
of RAM (2114's) was also provided on the board. The board could be address as
two separate 8K blocks of memory. There was also POC/Reset circuitry to cause
the Z80 to jump to the first memory location of one of these blocks.
The manual for the board can be
Other Vector Graphic S-100 Boards
Dual FD-HD Controller
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