Search found 30 matches

by Dave Britten
Thu Jul 12, 2018 5:50 pm
Forum: Hardware issues
Topic: Need a replacement LCD
Replies: 2
Views: 194

Re: Need a replacement LCD

The ribbon cable is definitely knackered in my case. That doesn't rule out an issue with the connector, of course, but I do know I need a new LCD assembly.
by Dave Britten
Wed Jul 11, 2018 1:46 pm
Forum: Hardware issues
Topic: Need a replacement LCD
Replies: 2
Views: 194

Need a replacement LCD

I think opening the calculator to work on the keyboard response has taken its toll on the LCD ribbon cable. I'm getting very intermittent behavior from the screen (partial updates, blank/fading screen, etc.). I'm guessing I need to buy a new one, but I'm not an expert at sourcing components like thi...
by Dave Britten
Sun Jul 08, 2018 12:14 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 170
Views: 17852

Re: buttons that don't register well

It feels about the same as the rest of the keyboard, but given that there's still some slight variability among the keys (my Rdown requires more force than TAN, for example), it's difficult to say on which side of the mean Enter now lies. It feels a hell of a lot better than when I got it, though.
by Dave Britten
Sat Jul 07, 2018 8:40 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 170
Views: 17852

Re: buttons that don't register well

Dave, Are you saying that after applying Ceaser's fix your Enter key needs same force to register as all the other keys? Thanks, Qualitatively speaking, yes (I don't have anything to measure the exact force). But the important part is that after flexing the key hinges and then inserting the Post-It...
by Dave Britten
Sat Jul 07, 2018 1:22 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 170
Views: 17852

Re: buttons that don't register well

Could you please explain your two little strips from a Post-It trick? I can't wait to try the flexing fix to the stiff keys of my DM42 but am worried that I might make the ENTER key worse, and will need the perform this secondary fix. However I don't understand what you did. Check out cesar's posts...
by Dave Britten
Thu Jul 05, 2018 9:57 pm
Forum: Usage tips, tricks and problem reports
Topic: saving variables anytime?
Replies: 7
Views: 487

Re: saving variables anytime?

Saving variables, matrices at least, is indeed planned for a future firmware version. Awesome, glad to hear that's on the to-do list. It's pretty high on my list of wants. Tab-delimited format seems like it would be the easiest format for import/export, since you don't have to worry about quoting v...
by Dave Britten
Thu Jul 05, 2018 3:44 pm
Forum: Hardware issues
Topic: buttons that don't register well
Replies: 170
Views: 17852

Re: buttons that don't register well

I just did the key flexing and Post-It note strips, and it's a massive improvement. At first I only did the key flexing, and while almost all the keys felt immediately better, Enter became substantially worse. But after adding two little strips from a Post-It, it's significantly better than it was o...
by Dave Britten
Fri May 04, 2018 2:59 pm
Forum: Usage tips, tricks and problem reports
Topic: HEX mode logic operation on a sequence with alpha digits
Replies: 3
Views: 359

Re: HEX mode logic operation on a sequence with alpha digits

You can recreate the LOGIC menu with a small program for even quicker access. While in the hex input menu, XEQ "LOGIC" to bring it up, and hit EXIT to go back to hex. From that point, you can just hit R/S to call up the logic menu again. LBL 00 STOP LBL "LOGIC" CLMENU "AND" KEY 1 GTO 01 "OR" KEY 2 G...
by Dave Britten
Mon Jan 22, 2018 3:17 pm
Forum: Firmware updates
Topic: Firmware V25 for DM1x/DM41(L) units
Replies: 38
Views: 3729

Re: Firmware V25 for DM1x/DM41(L) units

Awesome! I just flashed my 41L, and I'm seeing the extra space in EMROOM. I don't suppose there's enough unused space in flash to fit the Advantage module, is there? That would make the 41L pretty much "complete" for me. EDIT: Nope, looks like there's maybe about 4 KB free, but the Advantage module ...
by Dave Britten
Wed Jan 10, 2018 3:30 pm
Forum: DM42
Topic: Bigger ALPHA register
Replies: 26
Views: 3060

Re: Bigger ALPHA register

The problem with that is that the HP 42S (and Free 42) use the absolute value of flag numbers and some people have taken advantage of that in their programs. To maintain compatibility, negative numbers can't be used. The same applies to register numbers, which is why virtual variables were introduc...