41CL Strange Behavior??

[Neve]

(07-26-2021 06:43 PM)Sylvain Cote Wrote:  

(07-26-2021 04:10 PM)Neve Wrote:  Is this normal?? Should I be worried?

Yes and no.

That’s a relief. Thanks.

(07-26-2021 06:43 PM)Sylvain Cote Wrote:  When Monte created the 41CL 10+ years ago he did not know at the time the HEPAX method of dynamically moving its ROM around,
so he statically assigned its 41CL Extra Functions (YFNZ) ROM to page 7 and in so creating a conflict with the HP-IL module.
This is explained in the 41CL User Manual at page 18.
Because it is part of the core system, it cannot be updated with a normal ROM update and we all have to live with it.

Ok, I get it.

(07-26-2021 06:43 PM)Sylvain Cote Wrote:  Rule #41: always remove the HP-IL module before disabling the MMU.

Sylvain

. I’m not sure I always did, but I will from now on.

(07-26-2021 06:43 PM)Sylvain Cote Wrote:  Edit:

(07-26-2021 04:10 PM)Neve Wrote:  The unit works fine when the MMU is enabled, and it also works fine with my other 41CX unmodified machine. It also works perfectly with the PIL-BOX.

(07-26-2021 06:43 PM)Sylvain Cote Wrote:  It is because you have mapped the YFNZ or the YFNX ROM to another page and you left the page 7 free in your MMU configuration.

Even without mapping the YFNX ROM to PLUG1L? Just by enabling the MMU? Hmmm…