HP Forums › HP Museum Forums › Old HP Forum Archives v
Seeking hp48 2MB and 4MB card schematics

Linear Mode
Seeking hp48 2MB and 4MB card schematics


▼
David Griffith Offline
Unregistered
Posts: 134
Threads: 31
Joined: Oct 2011
#3
03-17-2012, 02:09 AM

I'm trying to find information on 2MB and 4MB ram cards for the HP48. Hpcalc.org has info on making a 128k card and something on making a 1MB board / soundcard combo... So I seem to have the info to make these cards. Does anyone here understand the 1MB board well enought to walk me through what needs to be done to create a 4MB board?

Find
▼
NateB Offline
Unregistered
Posts: 74
Threads: 9
Joined: Jul 2010
#4
03-17-2012, 10:14 AM

You might find something useful in this document [PDF]

Find

Possibly Related Threads…
Thread Author Replies Views Last Post
  Seeking DIY4X update David Griffith 10 2,802 11-15-2012, 12:41 AM
Last Post: Eric Smith
  HP48 Cogo Card - Worth Anything? JamesT 4 1,545 08-21-2012, 02:46 AM
Last Post: Reth
  HP41 Card Reader not Pulling Card Colin Verrilli 14 4,297 07-29-2012, 05:53 PM
Last Post: Randy
  Seeking new resources for TI NSpire Programming Namir 6 2,277 07-29-2012, 03:57 AM
Last Post: fhub
  Klotz hp48 card docs David Griffith 0 1,154 03-23-2012, 05:59 PM
Last Post: David Griffith
  HP41CV drains battery. Schematics? Harald 15 4,193 03-18-2012, 09:22 PM
Last Post: Luiz C. Vieira (Brazil)
  Seeking Beta Testers... Tim Wessman 0 769 03-15-2012, 12:55 PM
Last Post: Tim Wessman
  Seeking DIY5 update and webpage David Griffith 1 1,117 02-11-2012, 01:27 PM
Last Post: Eric Smith
  Hp48 mechanical engineering card giancarlo 1 1,167 09-24-2011, 03:26 PM
Last Post: NateB
  Results of new root-seeking methods Namir 3 1,381 08-22-2011, 03:28 PM
Last Post: C.Ret

Forum Jump: