Any update on the HP-41C "ram module" project?



#3

A few weeks/months ago, this was all the rage here.

Someone was working on a prototype for a ram module plug in for the HP-41C (either module or card reader size).

Any update? Any news?


#4

I gues you are referring to my project. There is certainly progress, and I will try to make a more detailed update later. The status now is:
- new specifications are ready, will post them in a week or so on my website
- simulations are getting along just fine, I am adding functionality to make a full functional MLDL
- I have the Xilinx CPLD prototyping board on my desk
- I have bought a second hand scope/logic analyzer to do hardware debugging
- I am struggling with a few features, will ask questions to the forum in a week or so

Merry Christmas


Possibly Related Threads…
Thread Author Replies Views Last Post
  42S with nonvolatile RAM Lyuka 5 2,917 12-13-2013, 08:52 AM
Last Post: Lyuka
  Reasonable price for a 41C, Quad Mem, Time, Navigation and Card reader module? Eelco Rouw 10 4,649 12-12-2013, 01:52 AM
Last Post: Eelco Rouw
  I can't update HP Prime JavierLopez 7 3,401 12-06-2013, 10:37 AM
Last Post: JavierLopez
  FRAM71 Project aj04062 1 1,198 11-25-2013, 01:59 PM
Last Post: Hans Brueggemann
  [HP-PRIME] QPI project CompSystems 0 871 10-09-2013, 02:51 PM
Last Post: CompSystems
  Best way to test HP-71B RAM modules (the 32K/96K ones etc.)? Philippe Lasnier 4 2,359 09-25-2013, 09:54 AM
Last Post: Philippe Lasnier
  HP 2225D+ RAM failure/replacement Luca 4 1,900 09-10-2013, 01:46 PM
Last Post: Luca
  RPN-1200 Project Benoit Maag 0 821 08-25-2013, 01:05 AM
Last Post: Benoit Maag
  Questions about building a RAM card for hp 48 Waon Shinyoe (China) 0 1,085 07-09-2013, 09:53 PM
Last Post: Waon Shinyoe (China)
  HP-41C Custom Survey Module Identificaiton Help Dan Grelinger 0 913 01-27-2013, 01:51 PM
Last Post: Dan Grelinger

Forum Jump: