Post Reply 
HP-71B 4Kb (CMT32k FrontPort) Memory Module "Battery" - FRAM
01-29-2021, 08:32 AM (This post was last modified: 01-29-2021 01:54 PM by KimH.)
Post: #13
RE: HP-71B 4Kb Memory Module "Battery" - FRAM
I got my shipment of 10uF 25v - X5R - SMD 1210 - MLCC. - they are tiny! About 3*2*2mm

So out with the Soldering iron, mounted two short wires on the CAP and placed it in the "slit" which the Module mold has in the handle-part, wires through 1mm drilled holes.

Placed two files in the FREEPORT'ed module, now IRAM - LEXCAT (Basic) and PEEKUTI2 (That's what I call my custom LEX-File) something I could run which used both filetypes to validate that the content remained intact.

Two TITANs next to each other and got out my stopwatch.

First try, moving module from machine 1 to 2, in a few seconds, ran LEXCAT on the PEEKUTI2 everything works.

Then, 30 Seconds, 1 Minute and so on, every time testing that the content was intact, no Memory Lost, obviously that is part of the test.

My last test was 20 minutes, still all good. Amazing!

I am happy Smile

I will add 10 minutes at a time over the course of today and report back when the 4k Module actually fails to retain it's content or lose it's wits in the memory chain.
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: HP-71B 4Kb Memory Module "Battery" - FRAM - KimH - 01-29-2021 08:32 AM



User(s) browsing this thread: 1 Guest(s)