Re: Unknown ROM. Monitor 1A Message #3 Posted by Tony Duell (UK) on 4 Mar 2002, 2:14 p.m., in response to message #1 by Philip Reagan (Houston, TX)
It is an 'early' version of the DevIL ROM, one that wasn't generally sold to customers. And yes, most of the functions are the same in the DevIL ROM.
SETBUFX is the same as BSIZEX, and I think the other function you mention has an equivalent too. I believe that the diagnostic programs for HPIL devices were type-in programs for the HP41 using this module, and that if you
translate a couple of functions (SETBUFX -> BSIZEX is the main one) then they'll run on a normal 41 with a standard DevIL ROM.
I believe, also, that the MONITOR 1A rom was released to PPC and distributed by them as PPC EPROM 5A (that's just the name on the hip -- the title that shows up in CAT 2 was MONITOR 1A). Or at least that's what my synthetic quickref implies
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