HP-41 / DM-41X / HP-41CL -> Page 6 and Page 7 friendly rom summary thread

[Chr Yoko]

(06-10-2022 03:35 PM)MeindertKuipers Wrote:  

(06-10-2022 02:12 PM)Chr Yoko Wrote:  Nice subject !

=> P7 is used by the HP-IL ROM.
But if i use/plug an HP-IL Printer , is the P6 will still be free ?

If you plug the physical HP-IL module then P6 is automatically used by the HP-IL printer module. If you disable the HP-IL printer (the little switch on the HP-IL module) then the printer module is moved to P4. But P6 can then only be used by P6 friendly modules, and P4 cannot be used by Library 4 (in case of an HP41CL for example) and that means that you cannot use OSX-BS4.

Thanks for the detailled answer !
On my 41CL P4 i have at the moment the LIB4, and i would like to keep that wonderfull HP-IL connection , so that is confirming that P6 & P7 can't be used on my usual configuration.