8 Oct
1998
8 Oct
'98
2:55 a.m.
Hi Jim and all,
At 10:50 PM 10/7/98 -0700, you wrote:
Can anyone confirm this vague memory, or set me
straight?
I seem to recall that one (or more) of the Godbout/CompuPro ram boards used
a 2kx8 static RAM part that had the same pinout as a 2716 EPROM, and could
support 2716s in place of some/all of the RAM chips. True or false?
And if true, was there any special configuration that needed to be done for
the 2716s?
A 6116 is a 2kx8 static ram. The only difference in its pinout from a 2716
is pin 21. For the 6116 it is /write enable (active low). For the 2716 it is
V(program). For read it is tied to 5V, it needs a higher voltage and
current, up to 5mA, so just a TTL "1" isn't enough. Can you jumper this pin
to +5 volts?
-Dave