Search found 53 matches

by whuyse
Mon Mar 30, 2020 9:38 am
Forum: Usage tips, tricks and problem reports
Topic: Peculiar Behaviour of solver on DM42
Replies: 4
Views: 198

Re: Peculiar Behaviour of solver on DM42

The program is correct, Walter.
But I can't reproduce it - we have to know the guess(es) introduced for X?
Also, what's the version of the DM42? (SETUP-About)
Cheers, Werner
by whuyse
Wed Mar 18, 2020 2:23 pm
Forum: Software Library
Topic: Decimal to fraction conversion
Replies: 3
Views: 598

Re: Decimal to fraction conversion

Joe: because it checks whether the error is less than 1e-12.
1146408/364913 - 3.14159265359 = 1.4e-12

Cheers, Werner
by whuyse
Sat Feb 29, 2020 8:03 am
Forum: Software Library
Topic: Matrix Viewer
Replies: 20
Views: 2425

Re: Matrix Viewer

I’m having second thoughts on the top vs bottom-aligned fonts. 2. I'm not sure about having the UFL matrix "top aligned". By it being Bottom Aligned, it makes doing upper/lower case words simple - likewise doing subscripts/superscripts. Upper/lower case is no issue of course, that’s not what I meant...
by whuyse
Fri Feb 28, 2020 9:24 pm
Forum: Software Library
Topic: Matrix Viewer
Replies: 20
Views: 2425

Re: Matrix Viewer

2. I'm not sure about having the UFL matrix "top aligned". By it being Bottom Aligned, it makes doing upper/lower case words simple - likewise doing subscripts/superscripts. 3. I think it would be best to have the UFL matrix bottom aligned and then just use your DF program to adjust for a top align...
by whuyse
Fri Feb 28, 2020 9:02 pm
Forum: Software Library
Topic: Matrix Viewer
Replies: 20
Views: 2425

Re: Matrix Viewer

I've picked up some new coding techniques from reviewing your programs. One of the best was the use of subtracting the pressed key code from the key code matrix and doing 1/x on the matrix. If it results in an error (ie, divide by zero) then you know if a valid key was pressed. Much quicker/easier ...
by whuyse
Fri Feb 28, 2020 5:18 pm
Forum: Software Library
Topic: Matrix Viewer
Replies: 20
Views: 2425

Re: Matrix Viewer

Hi Bill, Yes I realised there’s no easy way of copying a matrix to another state file, but I wanted to make it easy to take a peek. You don’t need UFL though, well not for now, I just put the digit fonts into DF, but the problem remains of course. One of my goals is to have UFL hold all 4 fonts, and...
by whuyse
Sat Feb 22, 2020 1:08 pm
Forum: DM42
Topic: DM42 skin for the Free42 simulator
Replies: 43
Views: 7534

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: 7534

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: 2425

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: 791

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