< Ack! I need a bunch of these to get a PET 2001 going (all of the 6550s < are bad, and I was told that the 2114 is the same part?) and a VIC 3K RA < Expander fixed. I don't think so. However, I have a handful of 2114s. If I were building now I'd use 2116 (2kx8), 6264 (8kx8) or the 62256 (32kx8) as they are cheap and required fewer interconnects and simpler layouts. < Is there anything else that they can be easily replaced with? With som < minor hacking that doesn't modify the computer in any major way? 2114s are a reliable part, there were some vendors that made garbage! The NEC D444 is cmos pin/level compatable and RCA had the 5114. Allison