Search found 884 matches

by Thomas Okken
Fri Feb 23, 2024 5:52 pm
Forum: Usage tips, tricks and problem reports
Topic: PIXEL bug?
Replies: 14
Views: 879

Re: PIXEL bug?

I think PIXEL and AGRAPH, and LINE in Plus42, are useful in run mode, for checking parameter behavior (which I can never remember)... I’m not sure they are very useful on Free42 with the lower half of the display covered by the menu, and the upper half with the X content. You're obviously not going...
by Thomas Okken
Fri Feb 23, 2024 1:06 pm
Forum: Usage tips, tricks and problem reports
Topic: PIXEL bug?
Replies: 14
Views: 879

Re: PIXEL bug?

Here I come face to face with my own policy :lol:

I think PIXEL and AGRAPH, and LINE in Plus42, are useful in run mode, for checking parameter behavior (which I can never remember)...
by Thomas Okken
Fri Feb 23, 2024 8:52 am
Forum: Usage tips, tricks and problem reports
Topic: PIXEL bug?
Replies: 14
Views: 879

Re: PIXEL bug?

When the message flags are set, the display is not updated the way it usually is after a function completes. Whatever is there, stays there. That's why the PGM.FCN menu appears to stay up when you execute PIXEL using that menu. The menu is not actually active after PIXEL returns; it just looks that...
by Thomas Okken
Fri Feb 23, 2024 7:59 am
Forum: Usage tips, tricks and problem reports
Topic: how to read state file?
Replies: 3
Views: 289

Re: how to read state file?

This should improve things a lot.... https://technical.swissmicros.com/decoders/dm42/ Unfortunately, it won't. That page only converts "raw" files to and from plain text, but grbrum was asking about state files. State files are in a binary format that wasn't designed to be human-friendly....
by Thomas Okken
Thu Feb 22, 2024 11:48 pm
Forum: Usage tips, tricks and problem reports
Topic: PIXEL bug?
Replies: 14
Views: 879

Re: PIXEL bug?

I don't know what exactly the DM42 does, but on the HP-42S and in Free42, PIXEL sets the pixel indicated by the coordinates in X and Y, and it sets the message flags . The part about the message flags is important, I did not just mention that in order to be pedantic. When the message flags are set, ...
by Thomas Okken
Sun Feb 18, 2024 4:47 pm
Forum: Usage tips, tricks and problem reports
Topic: PIXEL bug?
Replies: 14
Views: 879

Re: PIXEL bug?

Regarding the second part of your question: PIXEL sets flags 50 and 51, the message flag and the two-line message flag. That causes the display to freeze, until the user does something, or until the program calls CLD.
by Thomas Okken
Wed Jan 10, 2024 12:15 am
Forum: DM42
Topic: DM42 Programming Tool bug
Replies: 2
Views: 757

Re: DM42 Programming Tool bug

According to HP-41 Synthetic Programming Made Easy by Keith Jarett, the third byte of an END can have four values: 09 = packed END, 0D = unpacked END, 29 = packed .END., and 2D = unpacked .END.. The low nybble of the first byte and all of the second byte encode the offset to the next item in the glo...
by Thomas Okken
Sun Dec 31, 2023 9:10 pm
Forum: Software Library
Topic: TVM for NSTK mode
Replies: 9
Views: 1309

Re: TVM for NSTK mode

Ugh, no, ignore my previous post. I was talking about the programmable menu (CLMENU, KEYG, KEYX, MENU) while the topic at hand was of course VARMENU / VARMNU1. I did say one thing in that post that is relevant to your question, and that is that RTN is the way to get out of this situation as well. It...
by Thomas Okken
Sun Dec 31, 2023 2:17 pm
Forum: Software Library
Topic: TVM for NSTK mode
Replies: 9
Views: 1309

Re: TVM for NSTK mode

Hmm, I am stuck in a menu loop! What would be the idiomatic way to allow the menu to escape? Does it put a key '9' anywhere I can check on? Use RTN; that not only clears the RTN stack but also exits the programmable menu without tripping the EXIT handler. Also, when creating a programmable menu, al...
by Thomas Okken
Sun Dec 31, 2023 2:15 am
Forum: Software Library
Topic: TVM for NSTK mode
Replies: 9
Views: 1309

Re: TVM for NSTK mode

Nice! I'm glad to hear that solved the problem. As far as starting guesses are concerned: I'm not really all that knowledgeable about the topic either. Most of the Plus42 TVM functionality is pretty straightforward and was derived from the equations given in the HP-17B manual, but of course I%YR is ...