Chuck and others: bad and good: this link that I got is partially intact datasheet for NEAT chipset, missing the 82C206 and it was blocked on same site that requires registation and other places that have this info requires subscription. GOOD NEWS: found the info in unlikely place, a service manual *for* old samsung 486sx/dx notebook at my work (we do TV/stuff)! I DID have the datasheet for 82C206 but for some reason on that HD had this stuff went POOF during the Great Corbybel (nuclear) trojan purge on stroke of midnight. Grrr. Even I had this printed out is gone too, must be one of those cleaning times. Even I'm missing early Scott Mueller's editions, I had one! I needed that to look up on the PS/2 stuff several weeks ago. Sigh! Be careful of what you throw WHAT away. Cheers, Wizard

Well, well, Pinout of 82C206 made short work of confirming that did lose backup power. Fault was in the 3.6V battery's plug contact, wiggled that plug made voltage bounce back and forth. The board is Asus ISA-386U3Q, 256K cache installed, UMC chipset and had decaying CMOS battery so I removed it long ago before I put that board in storage waiting for a case to come along. That time came when I recently picked up generic plamsa display lunch box case that have generic 386dx board, not cached. Took new 3.6V nicd battery pack and spliced in plug to it instead of soldered pack. The mAh rating is 280mAh instead of puny 60mAh. I have questions about plamsa display stuff shortly. Thought this chipset had seperate cmos back up supply pin. Actually not, this is shared supplies with use of diode. Cheers, Wizard