Search found 163 matches

by ijabbott
Sat Nov 09, 2019 1:11 pm
Forum: Hardware issues
Topic: USB-host (USB-OTG)
Replies: 5
Views: 297

Re: USB-host (USB-OTG)

Vitasam wrote:
Sat Nov 09, 2019 12:29 pm
Yes, I was thinking about powered USB hub. So, basically it is the only matter of DM42 FW, HW is capable, right?
The STM32 chip supports OTG. I don't think the DM42 is wired up to support it. Amongst other things, it would need a high speed crystal (4-48 MHz).
by ijabbott
Sat Nov 09, 2019 1:34 am
Forum: Software Library
Topic: Pricing calculations
Replies: 11
Views: 546

Re: Pricing calculations

keithdalby wrote:
Fri Nov 08, 2019 6:50 pm
DA74254 wrote:
Thu Nov 07, 2019 7:41 pm
dildo fuel cars.
Well that's a fuel I've not heard before
Presumably, the batteries run out just before you reach your destination.
by ijabbott
Wed Nov 06, 2019 11:15 pm
Forum: Hardware issues
Topic: USB-host (USB-OTG)
Replies: 5
Views: 297

Re: USB-host (USB-OTG)

Just found this external module for TI calculators . As far as I know stm32 of DM42 can support USB-OTG. In theory, is it possible to create, e.g. USB-UART profile or something similar? I don't think the DM42 would be capable of powering any device connected to the USB port even if the chip can sup...
by ijabbott
Sun Oct 13, 2019 12:38 pm
Forum: DM42
Topic: When will we get an up to date DM42?
Replies: 9
Views: 1422

Re: When will we get an up to date DM42?

I suspect they're busy with DM41X stuff at the moment.
by ijabbott
Wed Oct 02, 2019 8:31 pm
Forum: Discuss!
Topic: DM41X Alternative key layout
Replies: 44
Views: 3517

Re: DM41X Alternative key layout

Boub65 wrote:
Wed Oct 02, 2019 7:39 pm
But, DM41X will be full Swissmicros property because they own 100% of the IP. So only David and Michael will be able to provide different layouts and especially a DM41X close to DM42... it's up to them to decide...
They don't own 100% of the IP. A lot of it is owned by HP. :)
by ijabbott
Mon Sep 30, 2019 7:51 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 641
Views: 28152

Re: 43S Alternative key layout --> WP43C

Question for you stat guys: I get that E- is not equivalent to E- a negative value, as we should not only expect to reduce the sum but also decrement the count of elements. In this respect it sort of reminds of removing one element from a stack. However, I have not seen a calculator complaining abo...
by ijabbott
Sun Sep 29, 2019 6:03 am
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 641
Views: 28152

Re: 43S Alternative key layout --> WP43C

Nice, Günter! I think I heard you mention that the WP43C was not intended to have a faceplate with the blue labels, as it was only meant to "live" until the WP43S comes alive. There is actually talk about a custom faceplate, and I for one certainly hope it lives on past the WP43S launch. I do prefe...
by ijabbott
Thu Sep 26, 2019 12:44 am
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 641
Views: 28152

Re: 43S Alternative key layout --> WP43C

HP42S COMPLEX compatibility I am considering to add a config flag to optionally force COMPLEX compatibility for 42S. Is this complex entry a problem for anyone else? The issue is that on 43S, you either do 1 CC 2 EXIT (or 1 CC 2 ENTER) or 1 ENTER 2 EXIT CC On 42S you do: 1 ENTER 2 CC or 1 ENTER 2 E...
by ijabbott
Thu Sep 05, 2019 10:33 pm
Forum: Software Library
Topic: RTC Calibration program
Replies: 29
Views: 3977

Re: RTC Calibration program

For me it is not totally clear from the instruction, whether I have to set the clock each time I do the calibration... You just need to know how much it has lost or gained since the last calibration, and the date of the last calibration (assuming the current date set on the calculator is correct), ...
by ijabbott
Mon Sep 02, 2019 7:40 am
Forum: Software Library
Topic: RTC Calibration program
Replies: 29
Views: 3977

Re: RTC Calibration program

Had a heck of a time creating the file in Win 10 with Notepad. Kept insisting on using a .txt extension instead of .cfg. Went back to an old MSDOS computer to create the file, then copied via floppy disk to my Win XT computer and then connected the DM42 to a USB port so I could copy it to the FAT d...