The following warnings occurred:
Warning [2] Undefined array key 164687 - Line: 275 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 275 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $thread - Line: 295 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 295 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Trying to access array offset on value of type null - Line: 295 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 295 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $fid - Line: 295 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 295 errorHandler->error_callback
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined array key 164687 - Line: 331 - File: inc/plugins/threaded_mode.php PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php 331 errorHandler->error_callback
/inc/plugins/threaded_mode.php 304 ThreadedMode::buildtree
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $theme - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Trying to access array offset on value of type null - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $theme - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Trying to access array offset on value of type null - Line: 3 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 3 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Undefined variable $lang - Line: 5 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 5 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks
Warning [2] Attempt to read property "messages_in_thread" on null - Line: 5 - File: inc/plugins/threaded_mode.php(305) : eval()'d code PHP 8.1.2-1ubuntu2.14 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/inc/plugins/threaded_mode.php(305) : eval()'d code 5 errorHandler->error_callback
/inc/plugins/threaded_mode.php 305 eval
/inc/plugins/threaded_mode.php 23 ThreadedMode::showthread_threaded
/inc/class_plugins.php 142 threaded_mode_showthread_threaded
/showthread.php 918 pluginSystem->run_hooks





HP 41C and CV boards with some piggy backing from the factory



#2

Further to my queries below, and thanks for all the help from everyone.

Just to let you know, I do have an orphan CV board which will donate the LCD panel (functioning of course) and the:

1LE7 0001 THROUGH 1LE7 0005

to a "with all bugs, tall keys, contact balls" 1979 HP 41C with a bad D/S. This will give it a CV memory while saving the bugs which is the intent.

Here are five pictures of two C pcas and three CV pcas:

The "with all bugs, tall keys, contact balls" 1979 HP 41C with a bad D/S:

An HP 41C circa 1981:

An HP 41CV circa 1981 no piggy backing:

A 1982 HP 41CV with all six D/S chips piggy backed located at the top:

A 1983 version with two piggy backed D/S chips:

Now I know what piggy backing is (what a neophyte!)

==================================================
==================================================

Here is the project:

remove the yellow highlighted D/S chips on this HP 41C:

remove the yellow highlighted D/S chips on this HP 41CV and install them on the HP 41C board above with one chip piggy backed near the top for case clearance (thanks Eric, Randy and Jim):

If you see any problems with this YELL as I won't be doing it today ;-)

Cheers, Geoff

Edited: 18 Mar 2010, 3:02 p.m.


Possibly Related Threads…
Thread Author Replies Views Last Post
  HP Prime reset to factory state? BruceH 3 4,781 11-26-2013, 07:27 PM
Last Post: BruceH
  HP Prime reset to factory settings bertopl 16 4,005 09-28-2013, 03:53 AM
Last Post: bertopl
  USB flashing/Li-po boards patryk 6 2,376 09-08-2013, 12:31 PM
Last Post: patryk
  Can my CV take a CL board? Les Wright 5 2,051 06-03-2012, 08:33 PM
Last Post: Les Wright
  NoV-64: Possible to Burn Time Module for Use on a CV? Les Wright 10 2,908 06-02-2012, 11:40 PM
Last Post: M. Joury
  FOCAL old factory ... Olivier De Smet 22 5,043 11-04-2011, 01:44 AM
Last Post: Israel Otero
  The FOCAL Factory: Lend, Lease Savings Geir Isene 4 1,653 10-25-2011, 05:20 PM
Last Post: gene wright
  The FOCAL Factory proudly presents 2 new modules Geir Isene 16 3,795 10-24-2011, 04:36 PM
Last Post: Ángel Martin
  Experience (Learning) Curve Program for HP-41C/CV/CX Chris Catotti 1 1,068 09-20-2011, 01:46 PM
Last Post: Frido Bohn
  Why I like the blank overlay option for the 41C, CV, CX & CL and my 41CL final configuration Geoff Quickfall 1 1,095 06-18-2011, 03:18 AM
Last Post: Geoff Quickfall

Forum Jump: