Re: [hp41] reading the catalog under program control Message #4 Posted by Dan Grelinger on 25 Feb 2013, 1:32 p.m., in response to message #3 by Wolfgang
Will all of the 20 programs fit in extended memory (perhaps with one or two Extended Memory modules)? If so, then Catalog 4 (41CX) or EMDIR (Extended Functions module in a 41C or CV) becomes your program directory and programs can be transferred to main memory as needed for execution.
A trick that may help you is to know that the interruption of Catalog 1 leaves the program pointer set at the last label displayed. A way to find and execute a program in main memory is to execute Catalog 1, press R/S when the desired program label is displayed, press the CLX (back arrow key) to exit the catalog, and then press R/S to begin program execution at the program label selected. I use that method frequently.
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