HP-71b CMT-64E Eprom - Whats under the black goop ?

[Dave Frederickson]

(03-19-2020 04:49 AM)mfleming Wrote:  Now that's pretty neat. I didn't look closely at the photos and just assumed plated through holes like the Classic and Woodstock connections. Looks like an IC under the socket? Forgot about the FRAM board. Any other parts on the BOM still stocked and available?

The IC under the socket is most likely a 1LJ4.

The FRAM71B FPGA and FRAM are still active and available. None of the other parts are special.