Search found 492 matches

by Thomas Okken
Sat Sep 26, 2020 2:15 pm
Forum: Discuss!
Topic: A couple of board features just added
Replies: 5
Views: 157

Re: A couple of board features just added

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by Thomas Okken
Sun Sep 20, 2020 8:07 pm
Forum: Usage tips, tricks and problem reports
Topic: Getting friendly
Replies: 5
Views: 263

Re: Getting friendly

Walter wrote:
Sun Sep 20, 2020 6:28 pm
AriL wrote:
Sun Sep 20, 2020 2:26 pm
We both need some lessons about getting something out of these nice calcs.
Thomas might need less lessons since the Free42 software is his ;)
I think Ari was referring to himself and his son. :)
by Thomas Okken
Sun Sep 20, 2020 11:10 am
Forum: Usage tips, tricks and problem reports
Topic: Getting friendly
Replies: 5
Views: 263

Re: Getting friendly

AriL wrote:
Sun Sep 20, 2020 10:36 am
how do I input HP42s manuals' SSS example program, line 11, X(arrow up)2?
X↑2 is how the x² function is displayed, so the keystrokes are [Shift] [√x].

The up-arrow character represents raising to power in this context, and you'll also see it in Y↑X, E↑X, and 10↑X.
by Thomas Okken
Sun Sep 13, 2020 7:47 pm
Forum: Usage tips, tricks and problem reports
Topic: novice programming questions
Replies: 3
Views: 274

Re: novice programming questions

(1) [GTO] . and general meaning of the deciimal point From p.111 of the manual, I see that [GTO] . has several reserved meanings. I could brute-force memorize these, but what would be a better way to understand them? In particular, why is the decimal point there at all? Is the appearance of the dec...
by Thomas Okken
Sun Sep 13, 2020 3:58 pm
Forum: Usage tips, tricks and problem reports
Topic: Program works in free42 (mostly) but not on DM42
Replies: 2
Views: 161

Re: Program works in free42 (mostly) but not on DM42

It sounds like there is something different between the states of your various Free42 instances. Programs should work the same regardless of which platform you're on, and in the case of Windows 7 vs. Windows 10 you're even running the same executable, so platform-specific bugs in Free42 can't be at ...
by Thomas Okken
Sun Aug 16, 2020 3:52 pm
Forum: Usage tips, tricks and problem reports
Topic: time and date functions
Replies: 10
Views: 622

Re: time and date functions

Appendix C of the HP-42S Owner's Manual only describes flags 31 and 67 as "reserved" for future use. Is there a more complete and updated catalog of the control flags (11 through 35) and system flags (36 through 80)? I seem to be the only person at the party who doesn't know what each flag signifie...
by Thomas Okken
Sat Aug 15, 2020 10:19 am
Forum: Usage tips, tricks and problem reports
Topic: time and date functions
Replies: 10
Views: 622

Re: time and date functions

Free42 shows the same behavior when you do YMD followed by SF 31. It's an odd use case, but flag 31 shouldn't matter when flag 67 is set, so that is a bug. I'll fix it in 2.5.20. UPDATE: Yep, the date2comps() function, which extracts the year, month, and day components from a date, swaps the month a...
by Thomas Okken
Fri Aug 14, 2020 11:18 pm
Forum: Usage tips, tricks and problem reports
Topic: time and date functions
Replies: 10
Views: 622

Re: time and date functions

rprosperi wrote:
Fri Aug 14, 2020 10:43 pm
DOW returns a number, not a string (Sun=0, Mon=1, etc.)
Yes, but when executed from the keyboard, DOW also displays the day of the week as a 3-character string.
by Thomas Okken
Fri Aug 14, 2020 9:09 pm
Forum: Usage tips, tricks and problem reports
Topic: time and date functions
Replies: 10
Views: 622

Re: time and date functions

When I call the DATE function, the X-register is: 2,020.0813 This is exactly what I expected. I prefer YMD, and the top strip om my calculator displays 2020-08-13. However, when I call the DOW function when this number is in the X-register, I get: Invalid Data when I expected THU Similarly, when I ...
by Thomas Okken
Fri Aug 14, 2020 9:06 pm
Forum: DM42
Topic: time and date math
Replies: 9
Views: 593

Re: time and date math

One thing I don't understand: the time and date functions, which are Free42 extensions to the HP-42S functions. When I call the DATE function, the X-register is: 2,020.0813 This is exactly what I expected. I prefer YMD, and the top strip om my calculator displays 2020-08-13. However, when I call th...