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[DM15 M1B V25] % produces incorrect results

Posted: Sat Feb 17, 2018 5:35 am
by bbaren
The % operator behaves strangely on my DM-15. Examples:
  • 100 ENTER 10 % produces 1.0000
  • 45 ENTER 10 % also produces 1.0000
  • 10 ENTER 3 % produces 0.4771
  • 50 ENTER 100 % produces 2.0000
I can reproduce these (and many others) consistently, performing a PR reset before each one. Can anybody else?

Re: [DM15 M1B V25] % produces incorrect results

Posted: Sat Feb 17, 2018 8:15 am
by grsbanks
Nope.

Both my units produce correct results.

Have you tried re-flashing the firmware?

Re: [DM15 M1B V25] % produces incorrect results

Posted: Sat Feb 17, 2018 12:09 pm
by DavidM
bbaren wrote:
Sat Feb 17, 2018 5:35 am
  • 100 ENTER 10 % produces 1.0000
  • 45 ENTER 10 % also produces 1.0000
  • 10 ENTER 3 % produces 0.4771
  • 50 ENTER 100 % produces 2.0000
Just an observation: it appears that your results are actually the LOG of the second argument (the value in X). Do you also have problems with y^x? Perhaps your keys aren't registering properly.

Re: [DM15 M1B V25] % produces incorrect results

Posted: Sat Feb 17, 2018 12:38 pm
by toml_12953
DavidM wrote:
Sat Feb 17, 2018 12:09 pm
bbaren wrote:
Sat Feb 17, 2018 5:35 am
  • 100 ENTER 10 % produces 1.0000
  • 45 ENTER 10 % also produces 1.0000
  • 10 ENTER 3 % produces 0.4771
  • 50 ENTER 100 % produces 2.0000
Just an observation: it appears that your results are actually the LOG of the second argument (the value in X). Do you also have problems with y^x? Perhaps your keys aren't registering properly.
If he had flashed the DM41L firmware onto the 15L, the LOG key would be where the y^x and % key is on the stock 15L although that's probably not the issue since if he pressed the blue key first, he'd get an alpha D.

Re: [DM15 M1B V25] % produces incorrect results

Posted: Sat Feb 17, 2018 5:06 pm
by bbaren
DavidM wrote:
Sat Feb 17, 2018 12:09 pm
Just an observation: it appears that your results are actually the LOG of the second argument (the value in X). Do you also have problems with y^x? Perhaps your keys aren't registering properly.
Aha! I performed the key self-test (with ÷-ON) and sure enough, I get “Error 9” when pressing the y^x button. The problem persists even through reflashing the firmware, which suggests it is indeed a hardware problem. Is it time to request a warranty replacement?