I've done the basic digging (www.chipdir.com, etc.) and can't find info on the following chips I found in a box of stuff some one gave me a while back: AMD 91L02 - I know it's some kind of SRAM but not the size or pinout. The 9101 is 256x4. This one is likely to be either 1024x1 or 1024x4 but I don't know which. NS 74C921 - The 74C922 and 74C923 are somewhat common keyboard encoders, one of which was used on the Netronics Elf-II design. I can't find any info on the pinout of the 74C921, but I did find several places selling them from $6 USD to 72 Danish Kroner (however much that is) I have a few of each, along with 2Kb of 21L02 chips (-2L and -4L speeds, whatever they are), all with 1979 - 1983 date codes. Any clues? Thanks, -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com