On 2/14/26 10:11 PM, Gregg Levine via vcf-midatlantic wrote:
Hello! Having now confirmed the existence of both a 6264 which I'd installed in the thing, and a 62128 and a 62256; this becomes one of are both of them the same pinouts of the 6264? I believe not, but over years I've seen some darned strange things surface regarding EPROM designs.
EPROMs https://bitchin100.com/wiki/index.php?title=M100ROM All are 5v only to operate SRAM has R/-W doesn't have the PGM 6116 & 6264 & 62256 https://www.nesdev.org/wiki/6264_static_RAM Just understand that dropping a 62256 into a 6264 designed socket will not give you 32K, you'll just be using the 8K of the 32K. And dropping either of these SRAM into and EPROM will not give you RAM. There's a bit of hacking required to get a socket designed for ROM to behave correctly as RAM. Not sure if the Tandy 102 has the same weirdness at the Tandy 100 but the 100 requires a special PCB to add ROM to that socket. The bitchin100.com site has the details for the 100, 102 and NEC 8201a (which I have). -- Linux Home Automation Neil Cherry ncherry@linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies KD2ZRQ