HP41CV Memory is not expandable?



#3

Hello,

last weekend was very joyful about calcs: my friend at his workplace find some HP41 accessories for me. I tried to expand my 41CV's memory with two HP82106A Memory Module in port 1 and port 2, but it is not worked. When I try to use other packs (Time Module, Stat I at port 3 and port 4) those are worked perfectly... What was wrong? Any idea acceptable! (I'm very beginner about 41 family...)

Thank you!
Csaba


#4

Hello Csaba,

1) With your Hp-41CV, you already have the full possible amount of conventional RAM (ie 319 registers). The other modules you mention are ROM/System modules which map to a different address space.

The 82106 modules cannot be used with the CV and were solely designed to bring a normal Hp-41C up to the capacity of your Hp-41CV.

Your only choices are now either sell them to an Hp-41C owner or donate/trade them with Diego Diaz at Clonix, who uses the shells to manufacture super Rom/Ram modules.

2) That being said, you may extend your Hp-41CV memory by using the Extended Functions/Memory module that will provide you with memory you can save/load your programs from/to.

3) Or better, when you get used and appreciate your 41, have a look to Diego's modules at the link above or Meindert's solution at: MLDL 2000

These 2 solutions are the best I know to extend your Hp-41 possibilities in a flexible and reliable way.

Cheers from France!

Etienne


Possibly Related Threads...
Thread Author Replies Views Last Post
  hp41cv memory modules tim peterson 10 436 11-07-2013, 11:09 PM
Last Post: Garth Wilson
  HP41CV Mike Powell 12 517 10-30-2013, 08:17 AM
Last Post: Mike Powell
  HP41CV Bry Sun 11 528 10-22-2013, 12:52 PM
Last Post: Geoff Quickfall
  HP41cv expiriences of a new user Wolfgang 28 883 02-13-2013, 08:02 PM
Last Post: Mike Morrow
  A simple question about the HP41C or HP41CV Antoine M. Couëtte 6 290 12-16-2012, 04:06 AM
Last Post: Antoine M. Couëtte
  Problem with HP41CV Bruce Larrabee 19 694 09-18-2012, 09:29 AM
Last Post: Luiz C. Vieira (Brazil)
  41 User Memory vs System Memory Gerry Schultz 6 323 07-01-2012, 12:02 AM
Last Post: Monte Dalrymple
  HP41CV drains battery. Schematics? Harald 15 550 03-18-2012, 09:22 PM
Last Post: Luiz C. Vieira (Brazil)
  HP41CV batteries John Abbott (S. Africa) 3 196 03-02-2012, 06:15 AM
Last Post: John Abbott (S. Africa)
  HP41CV faulty Steve Hunt 6 256 12-27-2011, 12:45 AM
Last Post: Kerem Kapkin (Silicon Valley, CA)

Forum Jump: