Search found 299 matches

by Thomas Okken
Sat Feb 16, 2019 5:14 am
Forum: DM42
Topic: Math related question
Replies: 1
Views: 80

Re: Math related question

That value is 2/pi, since the integral from 0 to pi of sin(x), in radians, is exactly 2. Your DM42 will give a more accurate result if you set ACC to something smaller. The integral of sin(x), in degrees, from 0 to 180, is exactly 360/pi, since you're basically stretching one half-wave by a factor o...
by Thomas Okken
Tue Feb 12, 2019 3:54 pm
Forum: DM42
Topic: Looking forward to the DM42 update utilizing the Free42 2.023 update...
Replies: 16
Views: 469

Re: Looking forward to the DM42 update utilizing the Free42 2.023 update...

I sympathize with those complaints to some extent... When my phone updates a dozen apps, less than a week after the last time I checked for updates, sometimes I do get a bit annoyed myself, and so I try not to add too much to that traffic. But people can complain about the weirdest things! I just ha...
by Thomas Okken
Tue Feb 12, 2019 10:58 am
Forum: DM42
Topic: Looking forward to the DM42 update utilizing the Free42 2.023 update...
Replies: 16
Views: 469

Re: Looking forward to the DM42 update utilizing the Free42 2.023 update...

It does look like I am running out of bugs to fix. There's still plenty on my to-do list, but looking at which items affect the core, that is, are not platform-specific user interface issues, this is all I have at the moment: More accurate 2x2 matrix operations More accurate dot product using FMA Be...
by Thomas Okken
Tue Feb 05, 2019 11:17 pm
Forum: Hardware issues
Topic: Keyboard debouncing
Replies: 63
Views: 6533

Re: Keyboard debouncing

X<>Y does not affect LASTX
by Thomas Okken
Wed Jan 23, 2019 12:45 pm
Forum: Update Announcements
Topic: UPDATE: DMCP-3.12 / DM42-3.12
Replies: 21
Views: 1539

Re: UPDATE: DMCP-3.12 / DM42-3.12

The copyright message still says 2018... The same thing happened to me in the Windows build. Apparently I missed free42/windows/Free42.rc during my annual copyright year update ritual. Anyone have a clue why the MacOS grep would not find 2018 in that file, despite the fact that the MacOS file says ...
by Thomas Okken
Sun Jan 20, 2019 12:25 am
Forum: Usage tips, tricks and problem reports
Topic: Empty CUSTOM menu
Replies: 11
Views: 588

Re: Empty CUSTOM menu

I was speaking tongue-in-cheek, but yes, I think the HP-42S is amazingly well-designed, and in my effort to replicate it, I try to stay as close to that design as I can. I've made exceptions for bugs — don't want to replicate those — and one or two other things, like turning on the up/down annunciat...
by Thomas Okken
Fri Jan 18, 2019 10:48 pm
Forum: Usage tips, tricks and problem reports
Topic: Empty CUSTOM menu
Replies: 11
Views: 588

Re: Empty CUSTOM menu

Because That's Not How The Real HP-42S Works™
by Thomas Okken
Fri Jan 18, 2019 1:00 am
Forum: Usage tips, tricks and problem reports
Topic: Empty CUSTOM menu
Replies: 11
Views: 588

Re: Empty CUSTOM menu

Exactly. :D In other words, the CUSTOM menu always has three rows, and so the multi-row (up/down) annunciator is always on while CUSTOM is active, whether any assignments have been made or not.
by Thomas Okken
Mon Jan 14, 2019 1:30 pm
Forum: DM42
Topic: Free42 has a new version, 2.022, time for a DM42 ROM update...
Replies: 12
Views: 854

Re: Free42 has a new version, 2.022, time for a DM42 ROM update...

I think everybody here knows by now how a DM42 firmware update works. No need to split hairs over the terminology. On the subject of functionality, these are the four items in Free42 2.0.22 that are relevant to the DM42: INPUT should clear any message from the display before showing the prompt, but ...
by Thomas Okken
Sun Jan 13, 2019 5:50 pm
Forum: DM42
Topic: Free42 has a new version, 2.022, time for a DM42 ROM update...
Replies: 12
Views: 854

Re: Free42 has a new version, 2.022, time for a DM42 ROM update...

Four of the six changes in 2.0.22 affect *all* platforms. They're all pretty minor, but still...