HP 34C for sale [SOLD]

[brouhaha]

(04-16-2023 02:22 AM)LesP Wrote:  Interested in what forum members believe it is worth as is “working” or as spare parts.

I couldn't possibly say what it is "worth", but I would be willing to pay $25 for it, plus postage. I'd definitely be using it as parts, to build a 30-series test and debug platform, like I've already been doing for the Woodstock and Nut generation chips. I fully expect that it would fetch more than that on the auction site.

I'd actually been recently considering how to kludge up some zero-insertion-force test sockets for 30-series chips that have the right-angle lead form used in the earlier solderless assembly style. The 34C was the last model of the series, so I'm not sure if any 34C were made using the solderless assembly. Dealing with the normal DIP chips is a lot less hassle, but ultimately I'll need to deal with both.

Part of what I'm trying to do is collect information for more accurate microcode-level simulation (poking at dark corners of the architecture), and part of it is to identify which ROM and RAM address ranges are stored in which of the eight-pin chips. For the 30-series, I know the total memory address ranges for each model, but don't have it pinned down to individual chips.