Programming issue HP41CX

[jhaig99]

(02-13-2018 08:04 PM)Dieter Wrote:  

(02-13-2018 07:30 PM)jhaig99 Wrote:  Hoping a look at the program will reveal some issues that will help me. To repeat, my mag cards no longer work, so I am working with manual entry.

First question: do you have a printer attached to the calculator?

If not, how could you enter printer-specific instructions like ACA or PRBUF (line 26/27 and many others). Take a look at the progrom you entered. What do you see there?

26 ACA
27 PRBUF

or is it

26 XEQ "ACA"
27 XEQ "PRBUF"

The printer commands require two bytes, while the XEQ-versions are subroutine calls (!) that require 6 or 8 bytes which may explain why the program does not fit. On the other hand I do not think that this will free up 19 registers.

If you don't use a printer you can remove several parts of the program which would make it even smaller. Also the program could consume less memory with a bit of more effective programming. But you said it worked when read from a card, so it should fit even in this less than optimal version.

Dieter

I have a printer, but it has a drive problem.

I see this on the CX. Entered as an alpha.
26 ACA
27 PRBUF

Do I need to connect my printer when entering the program?