Replacing a 4116 DRAM with a 4164:

                              [Image] [Image]

1. Bend pins 1 and 8 out on the 4164 so they can't go into the 4116's
socket.

2. Run a jumper wire from pin 9 (which is actually A7 on the 4164, but it's
+5 on a 4116) to pin 8 (which is Vcc on the 4164). This kills two birds with
one stone-- the 4164's A7 line is held high (it's not present on a 4116) and
the 4164 gets +5V.

3. Trim off pins 1 and 8 so the ends of the legs don't get caught on
anything or short anything out. (Pin 1 on the 4164 is a No Connect, so you
can actually cut it off completely.)

4. You're done! Plug the modified 4164 into a 4116 socket and you're off.

Notes: I've done this on a couple of projects, including a Robotron CPU
board. I haven't had any problems, but I suppose it's possible that it might
not work in some system...

-Clay

clay@supra.com cowgilc@worldaccess.com