Nice, but a word of warning. DO NOT connect the charger to that machine unless there's a known-good battery pack in it. The battery pack acts as a shunt regulator for the PSU, and if it's missing/open circuit, the PSU rail will rise to about 17V. If the calculator is turned on when this happens, not too much damage is done, because the calculator draws enough current to pull the voltage down. But if the calcualtor is turned off, and it's a -C (continuous memory) model as here, the CMOS RAM chip gets the full 17V, and promptly expires. It's HP custom, so you then have big problems. HP sold some things called 'reserve power packs' which were battery holders without the rest of the calculator. You plugged the standard AC adapter (charger) into that, and put the battery pack in. The idea was to charger one pack while using another in the calculator, so you always had a fully chargeed battery even if you used the calculator away from mains power all the time. HP enthusiasts have found that these reserve power packs are also useful for charging batteries with no risk to the calculator if the battery goes open-circuit (if the AC adapter is never connected to the calculator, the RAM can't get the overvoltage). Unfortunately for you, the reserve power pack for the Spice series (HP3xE, HP3xC) is by far the rarest one, to the extent that some say it never existed (it did, I have one). -tony

mystery sbus card, no expernal connectors. doesn't look like a 5x86 card, or a intel 486 card, of nfs accellerator card, no sun model numbers. 5 large chips, IAD-2 82229 30591A 74 IAC-I 733W94902 08491 74

AM95C71-16JC DV 131A4MB 1988 AMD

J9142 SCX68150XEG /VL J9142 SCX68150XEF /VF3 Any body have any ideas James