NorthStar - 16K Dynamic RAM
Board
NorthStar fairly early on saw the
utility of going with dynamic RAM boards.
The North Star 16K byte RAM board
(RAM-16-A) was compatible with most S-100 computers. The board will operated at
full speed with both 8080 and Z80 microcomputers, even with 4 MHz operation. The
industry standard 16-pin 4027 RAM chip (200 nanoseconds access) were used. A
parity option was available for use with the RAM-16-A. The RAM-16-A could be
addressed to any 16K region beginning at any 8K boundary. The RAM-16-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 seen
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
10/25/2013