On Thu, Mar 13, 2025, 12:37 PM Mike Stein via cctalk <cctalk@classiccmp.org> wrote:
> ISTR that some time ago I read mention here about an EPROM fast enough to > approach PROM speeds; anyone share that recollection, or even have a > source/part no.? > How big and how fast? Cypress made some 15ns UV eraseable parts, for example CY7C245A-15WC http://www.bitsavers.org/components/cypress/_dataBooks/1995_Cypress_High-Performance_Data_Book.pdf Chapter 4 I have some CY7C291A-35WC parts I bought to upgrade the microcode of an HP 1000 A900 12201-60001 Sequencer Card. (Haven't gotten around to doing that yet). >
