|Some Observations on Geir Isene's ROM Offerings|
Message #1 Posted by Les Wright on 4 June 2012, 9:46 p.m.
As I get more adept with EMU41, PIL-Box, and NoV-64, I have been keen to explore what else is out there. As many know, Geir presents several MOD and ROM files on his site consisting of content from the HP41 User Library Solutions books. I was interested in the High Level Math (HL_MATH.ROM), Physics (PHYSICS.ROM) and Test Statistics (TESTS.ROM) modules.
When burned to NoV-64, the Physics and High-Level modules show up in a CAT 2 list just like any other commercially produced module of FOCAL programs, like the Math Pac, Stat Pac, PPC, etc.
TESTS.ROM, on the other hand, does not appear in a standard CAT 2 listing. The little program 'TESTS runs fine in EMU41 in the absence of HEPAX, displaying or printing Geir's website URL. But on my NoV-64, where the presence of HEPAX is obligatory, whether or not 'TESTS runs seems on what else, if anything, in in HEPAX RAM. Basically, if HEPAX RAM is empty, XEQ 'TESTS returns NONEXISTENT. If there are user programs in my HEPAX RAM, XEQ 'TESTS will execute my own user program with which it shares the same XROM number. If something other than a program is the first program in my HEPAX RAM, XEQ 'TESTS will carry on correctly.
I am curious as to the difference in behaviour. My guess is that the Physics and High Level Math ROMs are assembled in such a way that they behave as standard 4K modules irrespective of where they reside, where TESTS.ROM is a copy of a HEPAX page, the contents of which do not appear in CAT and which may conflict with other programs in HEPAX RAM if HEPAX is present.
Any enlightenment would be most appreciated.