NorthStar - 32K Dynamic RAM
Board
This was NorthStar's second DRAM board.
They still had the option of a row of parity chips on the board.
The North Star
32K byte RAM board (RAM-32-A) operated at full speed with Z80* microcomputers,
even with 4 MHz operation, due to the 200 nanosecond access rating for the
16-pin dynamic RAM chip on which the design was based. Parity detect was
provided as a standard feature for maximum system integrity. The RAM-32-A could
be addressed to any 32K region beginning at an 8K boundary. The RAM-32-A has a
bank switching feature which allowed more than 64K bytes of RAM to be used in
the computer, and also facilitated special software applications, such as
timesharing.
The manual for this board can be
obtained
here.
Other NorthStar S-100 Boards
16K Dynamic RAM
32K Dynamic RAM
48K Dynamic RAM
64K Dynamic RAM
8088-SBC
FP Board
MDC-FDC
MDS-FDC SIO
UP8
Z80CPU HDC
This page was last modified
on
01/08/2011