SwissMicros Calculator Forum

Thanks for your reply. it makes me feel a little less nuts.

I don't remember using extended memory when I had my HP41CX in the 80s. i am a little spoiled with the DM41X with its RAM storage, so I've reacqainted myself with extended memory.

thanks for replying. i always use “GTO ..” after entering a program, but this is different. when i upload a program through the serial cable that is not already in the calculator, it doesn’t recognize the (first) LBL program name. it doesn’t show up in CAT 1. trying to run it results in “NONEXISTENT...

i found a work-around: i stored the desired program into Extended Memory, then did a memory dump, which showed the "invisible" DUMMY program (invisible to CAT 1). the DUMMY program had two END lines. I deleted those three lines (the LBL "DUMMY" and the two END lines, copied the d...

when using the DM41 Programming tool to generate a code dump of a program, i'm able to encode it and upload it to the calculator, but the calculator fails to recognize the program, whether using CAT 1 or GTO the program name. However, I can add a dummy program ahead of the desired program and then t...

I did - mistakenly on all three machines - and I’m very thankful for you for calling that to my attention. I had added the “DOY” subroutine as “LBL D”, attempting to merge “DOY” into “SUN” into one program, but forgot about the original “LBL D”. I also added a subroutine “LBL F” to merge “FLOOR” int...

Okay, I stepped through the program on 3 machines: i41CX+, a DM41X (sn 01143) and a DM41 (can’t locate the sn). The first time by pairs confirming each step is the same - the DM41 and i41CX+, then the DM41 and the DM41X. All three machines show the same steps. I then went through stepwise execution ...

i’m experiencing difficulty running the “SUN” sunrise/sunset program on my DM41. it runs fine on my DM41X and DM42, but on the DM41, i get answers that are slightly more than two hours different for sunrise (07:24 for DM41X and DM42, 09:30 on the DM41), and less of an difference for sunset (19:18 fo...

I got it. I used “screen /dev/tty.usbserial-0001 38400,8,n,1”, and received the prompt “DM41 >>”

I was then able to get the memory dump using “s”.

I don’t know why it works, which is troubling.

Thank you to everyone for your help.

I believe my issue may be the linefeed used by Terminal. Does anyone know how I can change the linefeed character to “ \n = 0x0a” as the EOL?

Thank you very much - i got to the blank screen, named “-zsh”. i could not get the calculator to respond beyond “SERIAL CONSOLE”. I tried typing “l” in the Terminal, but did not get a listing - nothing. I hate to be a pill, but if I can get some help to get it started I think I can figure the rest o...