Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!mips!apple!portal!cup.portal.com!Jake-S From: Jake-S@cup.portal.com (Jake G Schwartz) Newsgroups: comp.sys.handhelds Subject: Re: out-of-date-request: rombox for hp41 Message-ID: <37348@cup.portal.com> Date: 29 Dec 90 05:36:43 GMT References: Organization: The Portal System (TM) Lines: 15 Holget Veit requests a schematic for the HP41 "ROM box". The original de- sign by Jim DeArras finally got patented a few years ago, and I don't know if he would be willing to simply give the schematic away. In any case, it did have the capacity to hold up to 16K 10-bit ROM words in EPROM or 4 4K ROM pages at once, mapped to various HP41 pages selected by user- adjusted switches. It was powered by the HP41 itself, as well. Contact Jim at: James DeArras 12955 River Road Richmond, Virginia 23233 USA Jake Schwartz (I still have one of these if anyone is interested in taking it off my hands for a small fee.)