Thanks! Marc
> On May 2, 2020, at 4:49 AM, David Collins via cctech <cct...@classiccmp.org> > wrote: > > I've pulled together details of the controller used with an HP2748 paper > tape reader to dump a bunch of tapes from the HP Computer Museum's collection > with the help of J. David Bryan. > > The details are at this link.. > > https://drive.google.com/open?id=1KaJkVgYzPusJN9tLf4IaSIa104fvLhUs > > The unit and Arduino code are both pretty rough and ready and I'm sure can be > improved - but they served their purpose! > > Hope it is of use to others... > > Now to get those new tape files published... > > David Collins > www.hpmuseum.net > > > -----Original Message----- > From: David Collins <davidkcolli...@gmail.com> > Sent: Wednesday, 29 April 2020 7:34 AM > To: J. David Bryan <jdbr...@acm.org>; General Discussion: On-Topic Posts > <cct...@classiccmp.org> > Subject: Re: Wanted, Papertape Reader for Archiving Tapes > > Further to Dave’s post below, I’m happy to share the Arduino code and > schematic if anyone has a suitable reader and wants to try it. It was indeed > designed to interface to the HP2748 but is pretty simple and could be adapted > to any similar reader. > > David Collins > > Sent from my iPad > >>> On 29 Apr 2020, at 6:33 am, J. David Bryan via cctech >>> <cct...@classiccmp.org> wrote: >>> >>> On Tuesday, April 28, 2020 at 17:56, Tony Duell via cctech wrote: >>> >>> The HP2748 is a common-ish example of this type of un[i]t. >> >> David Collins of the HP Computer Museum and I just recently completed >> reading some 200+ paper tapes from the museum collection. He used a >> 2748 coupled with a custom Arduino-based interface to produce >> plain-text files containing an octal representation of the tape bytes. >> We passed these through a small program to convert them to binary >> files and a second program to verify checksums of those tapes >> containing relocatable or absolute binary object data. The resulting >> files can be used as is with the HP 2100 SIMH simulator or could be >> punched back into physical paper tapes if desired. >> >> -- Dave >> >
