I found an HP9825A


....but I found no documentation. Would some kind sould be able to fax me some pages that could get me started on programming this thing (just for fun)? There was also a 16-Bit I/O module/cable, and various programming cartrides. But, without manuals I'm lost... what's this HPL language like I wonder? The machine appears to work OK from what I can tell. Does anyone else out there own the same machine? I would love to correspond with you then...

Cheers, trond


Hi Thond,

The HP 9825 is a great machine and they're very reliable. HPL is similar to APL. "2 -> A" assigns 2 to the variable A. "A + 2 -> B" takes the value of variable A and adds 2 to it and assigns it to variable B. All variables in the 9825 are single characters. You can also use register variables, similar to the registers in a HP 41. "4 -> R(0)" asigns 4 to register 0. I think you can only use 0 through 9 for register variables. But you can use registers indirectly, "R(R(0)) -> C" takes the value from the register pointed to by register 0 and places it in the variable C. Try posting an ad in the HP news-groups and you should be able to find some manuals. The used manual dealers probably have them too since the 9825 was so popular. You will DEFINITELY need manuals to use the 9825 and it's interfaces. It's much too complicated to figure out by yourself. E-mail me directly and I'll give you the URL to a site with more info.


Possibly Related Threads...
Thread Author Replies Views Last Post
  [HP Prime] Calculating Prandtl Number with Units (bug found in USIMPLIFY) Timothy Roche 1 576 11-13-2013, 04:07 PM
Last Post: cyrille de Brébisson
  OT--Found!!! An HP reference on 'The Big Bang Theory' Matt Agajanian 0 522 11-08-2013, 10:23 PM
Last Post: Matt Agajanian
  HP-fonts - Where can I found? Csaba Tizedes (Hungary) 4 872 08-23-2013, 05:01 PM
Last Post: Csaba Tizedes (Hungary)
  Fun things found by running strings on the 39gII emulator bhtooefr 11 1,682 05-16-2013, 12:40 AM
Last Post: Mic
  Re: Help: HP9825A Power Up Issue Vassilis Prevelakis 0 449 12-20-2012, 11:44 AM
Last Post: Vassilis Prevelakis
  Found HP 65 with clear see thru case davefr 24 2,826 11-13-2012, 10:41 AM
Last Post: Bruce Larrabee
  Help: HP9825A Power Up Issue John M (Ottawa) 4 718 09-19-2012, 04:33 PM
Last Post: Dave Shaffer (Arizona)
  HHC 2012 - I found what I am going to wear Eddie W. Shore 19 1,869 08-30-2012, 05:31 PM
Last Post: Dale Reed
  Found on Youtube, comments section of bill platt 3 659 06-19-2012, 07:04 PM
Last Post: Diego Diaz.
  held breath, found tapes & drive working Garth Wilson 9 1,280 06-12-2012, 12:52 AM
Last Post: Garth Wilson

Forum Jump: