Search found 57 matches

by whuyse
Sat Feb 22, 2020 1:08 pm
Forum: DM42
Topic: DM42 skin for the Free42 simulator
Replies: 43
Views: 13435

Re: DM42 skin for the Free42 simulator

Yes, your site works, but it does not have the dm42_12 high-res gif, Thomas ;-)

Cheers, Werner
by whuyse
Sat Feb 22, 2020 8:41 am
Forum: DM42
Topic: DM42 skin for the Free42 simulator
Replies: 43
Views: 13435

Re: DM42 skin for the Free42 simulator

I can't seem to be able to install the skins straight from my iPhone. I can select an individual file (say, dm42_12.gif) but the Load button stays greyed out. Am I doing something wrong?
(In the meantime I installed them again using the http server - couldn't wait ;-)

Cheers, Werner
by whuyse
Tue Feb 18, 2020 7:08 pm
Forum: Software Library
Topic: Matrix Viewer
Replies: 20
Views: 5200

Matrix Viewer

Matrix Viewer and rudimentary editor This is a first try, and there are tons of things I will be changing still, but it works quite well as it is. Try it out with the included test matrices M44 and C24x5. before you start MVIEW is packaged with all its subroutines, the digit font matrix DF and a few...
by whuyse
Tue Feb 11, 2020 7:08 am
Forum: OFFIMG library
Topic: OFF IMAGE AS FLASH CARDS
Replies: 2
Views: 1795

Re: OFF IMAGE AS FLASH CARDS

I assign the LO routine to shift R/S and use this to turn off the calculator.
Are you sure you're talking about the DM42..?

Cheers, Werner
by whuyse
Mon Jan 20, 2020 10:58 am
Forum: DM42
Topic: DM42 skin for the Free42 simulator
Replies: 43
Views: 13435

Re: DM42 skin for the Free42 simulator

GETKEY behaves erratically on the first row of keys (not the menu keys).
The real DM42 returns 1-6 for the row S+ to XEQ, and doesn't work for the menu keys (which is a pity, BTW)
The DM42 skin returns 1-6 for the menu keys and 2192 for S+, 2072 for 1/X etc.

Cheers, Werner
by whuyse
Sun Nov 10, 2019 9:52 pm
Forum: Software Library
Topic: User Flag Catalog
Replies: 4
Views: 3113

Re: User Flag Catalog

in Free42 (and the DM42) you can store up to 14 characters per register instead of only 6, using the following utilities to transform up to 14 characters to the X register (A2X) and its inverse (X2A) 00 { 77-Byte Prgm } 01>LBL "A2X" 02 ALENG 03 14 04 X>Y? 05 X<>Y 06 25600 07 0 08>LBL 03 09 % 10 ATOX...
by whuyse
Fri Oct 04, 2019 8:54 am
Forum: Software Library
Topic: Graphics utilities: H/V lines, grids and tiles
Replies: 3
Views: 4065

Re: Graphics utilities: H/V lines, grids and tiles

It’s a printout from the Dm42 itself, not compatible with the program import. To import, use the .raw file.
Cheers, Werner
by whuyse
Tue Sep 24, 2019 3:18 pm
Forum: Software Library
Topic: Graphics utilities: H/V lines, grids and tiles
Replies: 3
Views: 4065

Graphics utilities: H/V lines, grids and tiles

0. Abstract My ultimate goal is to draw a chess board. To achieve this in a modular fashion, we'll need tools to draw lines horizontally and vertically, use these to draw a grid, and then be able to fill half of the grid cells with a shading pattern. So, without further ado: 1. HLINE X Y Z T In: n ...
by whuyse
Fri May 17, 2019 10:16 am
Forum: Discuss!
Topic: Precision of the Exponential Integral on DM42
Replies: 1
Views: 1428

Re: Precision of the Exponential Integral on DM42

Show us your code, please? And that site will simply use N+k-digit arithmetic and constants to get to the precision requested (N) ie. they'll use gamma to N+k digits to guarantee the result is accurate to N digits. eg. for x=-30 the largest summation term is about 2.7e10 so an extra 10 or 11 digits ...
by whuyse
Thu Feb 28, 2019 2:36 pm
Forum: DM42
Topic: Looking forward to the DM42 update utilizing the Free42 2.023 update...
Replies: 29
Views: 7155

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

in my second-to-last post, 'extended precision' was but an example ;-) - that's why I said 'i.a.' - it's the resulting accuracy that counts.
And yes, all of that applies to the complex case as well. A DOT product of 2 complex vectors is obtained using 4 real dot products.
Cheers, Werner