Search found 546 matches

by grsbanks
Wed Jun 05, 2019 10:05 am
Forum: Firmware updates
Topic: Firmware V29 for DM1x/DM41(L) units
Replies: 5
Views: 1248

Firmware V29 for DM1x/DM41(L) units

Firmware V29 has been released for DM1x and DM41 units. There's something for the DM41 and for extended DM15 variants in this update. DM41 There was a bug in the keyboard handling in V27 that prevented the user from acknowledging alarms if they became due and woke the calculator up after it had powe...
by grsbanks
Wed Jun 05, 2019 9:37 am
Forum: Usage tips, tricks and problem reports
Topic: Displaying images (not OFFIMGs)
Replies: 21
Views: 2215

Re: Displaying images (not OFFIMGs)

FF7F0000000040001820802C008C1864 FD7F0000000040001820xx2C00xx1864 => 80 and 8C FF7F9890503020E0A020404080008000 F97Fxxxx503020xxxx204040xx00xx00 => 98, 90, E0, A0, 80 and 80 So the encoder has some problems dealing with those chars. That's because of the way Unicode is encoded in UTF8. https://en.w...
by grsbanks
Wed Jun 05, 2019 6:37 am
Forum: Usage tips, tricks and problem reports
Topic: Displaying images (not OFFIMGs)
Replies: 21
Views: 2215

Re: Displaying images (not OFFIMGs)

There is no way to get characters with a code above 0x7E into a string without resorting to XTOA. Actually, there is: just make sure that the first code in a string is <= 0x7f {…} Thus, in an append string, all character codes can be used. Very good points that I should have included. Thanks for co...
by grsbanks
Tue Jun 04, 2019 3:41 pm
Forum: Usage tips, tricks and problem reports
Topic: Displaying images (not OFFIMGs)
Replies: 21
Views: 2215

Re: Displaying images (not OFFIMGs)

Check the character table in appendix E of the HP-42S manual. All string opcodes with a first byte greater than 0x7F correspond to instructions that operate on names. Thus, hex data F481414243, for example, is not a 4-character string including chr(0x81), A, B, C. It is the internal representation o...
by grsbanks
Tue Jun 04, 2019 3:03 pm
Forum: Usage tips, tricks and problem reports
Topic: Displaying images (not OFFIMGs)
Replies: 21
Views: 2215

Re: Displaying images (not OFFIMGs)

The encoder/decoder will handle any character that the DM42 can handle. If the encoder/decoder can't handle it then the DM42 can't, but remember the encoding to use if you want to create a string directly is that of the HP-42S/Free42/DM42. It will not handle UTF8 or any other representation of Unico...
by grsbanks
Tue Jun 04, 2019 1:26 pm
Forum: Usage tips, tricks and problem reports
Topic: Displaying images (not OFFIMGs)
Replies: 21
Views: 2215

Re: Displaying images (not OFFIMGs)

My questions are: 1) Am I doing something wrong? 2) What should I do to fix that? 3) Can you think of a better/more effective/working way of display pictures? Your problems will be helped tremendously if you look into AGRAPH instead of addressing pixels one by one. Don't forget that the DM42 only h...
by grsbanks
Wed May 29, 2019 12:00 pm
Forum: Discuss!
Topic: 43S News
Replies: 482
Views: 69165

Re: 43S News

Over_score wrote:
Wed May 29, 2019 7:50 am
I find this "french" notation more intuitive.
The fact that I did my secondary and further education in France probably explains why I find it more intuitive too :)
by grsbanks
Wed May 29, 2019 4:39 am
Forum: Discuss!
Topic: 43S News
Replies: 482
Views: 69165

Re: 43S News

ijabbott wrote:
Tue May 28, 2019 11:18 pm
You might also see it written as: ]-π, π], but I think (-π, π] is the more common style.
Not where I learned maths :) I always learned it as ]-π, π] and had never seen (-π, π] until this discussion cropped up. I find the former notation more intuitive and indicative of its meaning.
by grsbanks
Tue May 28, 2019 2:34 pm
Forum: Bug reports
Topic: [DM15L M1B V28] Using R/S in a subroutine reached by line number wipes the call stack
Replies: 11
Views: 1280

Re: [DM15L M1B V28] Using R/S in a subroutine reached by line number wipes the call stack

Personally, I think it should behave like a bug free HP-15C instead. Depending on what you class as a bug, both the HP-15C and the DM15 are bug-free... Personally I don't consider this a bug. The original 15C had a maximum of 448 bytes (not steps, some instructions use 2 bytes) and it was not unrea...
by grsbanks
Thu May 23, 2019 5:07 am
Forum: DM42
Topic: Benchmark Speed?
Replies: 22
Views: 2791

Re: Benchmark Speed?

It is interesting that for the iPhone, running the programs using a power supply yielded only slightly better results than running the programs using the battery. For the DM42, running the programs using a power supply yielded results that were much better than running the programs using the batter...