Well there are 20 bits of ALU .... And this guy has one and some other boards
http://nevadabarry.com/electron.html#HP%20Test%20Equipment NO Connection with the site/person/etc .. just passing it on On Wed, Jun 15, 2016 at 8:00 PM, Jay West <jw...@classiccmp.org> wrote: > I have one of those boards. You sent me an email about it and I replied a > week ago :) > > -----Original Message----- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of > CuriousMarc > Sent: Wednesday, June 15, 2016 9:49 PM > To: cctalk@classiccmp.org > Subject: Mystery HP 1000 board > > Can anyone identify this HP board (see link to pictures)? > > https://goo.gl/photos/BBuAV1oozWNSqeUTA > > It was at under the main board of a newly acquired HP 1000-E, next to the > firmware board. It says HP 54427-60050 Booster Microcode. It has 5 > bitslice > SN 74S181 chips at the back. So I surmise maybe it's a late ALU booster > upgrade? > > > > Marc > > > > > >