Back to MLDL2000: I did it again...


Hi, guys;

after a couple of hours of labor (a lot of criteria involved), I finally got to this:

Now I can set the CPLD power as I wish. The externally-accessible jumper connects to J7. In the above picture, the CPLD is powered in RUN and STANDBY mode (pins 2-3 connected). In order to run a CX configuration in a CV with no ROM installed, the jumper must be positioned to the right (pins 1-2 connected).

Well, it works! I always liked the CX functionality, did not care too much for the clock, but I miss the X-memory. I configured HEPAX 1D to page #6 and it worked fine so far, so I still have all four ports (eight pages) to work with and left address for the HPIL. The HEPAX RAM offers all X-memory functionality and some more, so I'll stick to it so far. The CX functionality now goes for the main memory extras. One of them I did not find anywhere but in the CX (I intend to add it somehow in a future ROM module) is showing the amount of bytes accupied by a program in the display while CAT 1 is running.

I documented all of the MLDL2000 operations (pictures). I'll add them to my photobucket later and then share them. I also took the time to add the small jumper which allows USB power line to charge the goldcap while the MLDL2000 is connected. Now I need no longer to open the MLDL2018A again (hope so...).


Luiz (Brazil)

Edited: 24 Dec 2009, 2:27 p.m.


I forgot to save about 3000 lines of hand-written, old-timer programs already keyed in and stored in the SRAM through HEPAX... Lost them all <:-C

At least I'll leave it as a strong advice: SAVE WHATEVER IS STORED IN SRAM PRIOR TO MAINTAIN THE MLDL2000. Connect it to the computer and download the SRAM contents first.


Luiz (Brazil)

Edited: 24 Dec 2009, 3:43 p.m.


ouch!, sorry to hear that.

Possibly Related Threads...
Thread Author Replies Views Last Post
  New website address for Meindert Kuipers' MLDL2000? Garth Wilson 2 597 08-11-2013, 01:43 PM
Last Post: Meindert Kuipers
  Getting back to the CL Geir Isene 6 964 03-20-2013, 07:02 PM
Last Post: Geir Isene
  HP-11C Back Screws John Swisher 0 422 09-12-2012, 10:52 AM
Last Post: John Swisher
  I am back ;) with a problem on HP 41 ;( wildpig 7 1,027 07-09-2012, 11:30 AM
Last Post: Mike Morrow
  Back with my DEG<->DMS formulas ! PGILLET 5 806 05-03-2012, 07:44 PM
Last Post: Bart (UK)
  15c LE back at HP Neil Carlson 4 754 03-27-2012, 04:56 PM
Last Post: Harald
  [WP34s] About SKIP and BACK fhub 8 1,035 01-09-2012, 06:10 PM
Last Post: Neil Hamilton (Ottawa)
  15C back in stock at sjthomas 8 1,053 12-22-2011, 10:32 AM
Last Post: Dan Grelinger
  Meindert's MLDL2000 robertoataulfo 7 1,031 12-05-2011, 04:39 PM
Last Post: Ángel Martin
  The most abused phrase "Check Back Soon" Michael de Estrada 8 1,068 10-11-2011, 10:25 PM
Last Post: hpnut

Forum Jump: