HP41CL newbie question

[rprosperi]

(03-19-2018 06:03 PM)Neve Wrote:  Thank you Sylvain. Greatly appreciated.
If I do a MMUCLR after the MMUDIS, won’t I have to replug all the other modules I have from scratch?

Yes, but that is partly his point - to clear any incorrectly installed (or no longer needed) ROMs.

I think you still have the CL Utils ROM (that matches with YFNP) installed, which is no longer needed since you now have the PWRX ROM.

If you find it's in port 9 (for example) you can easily remove it with:

XEQ 'PLUG', then when it prompts for ROM name, reply with 'EMPT' then when it prompts for the port number reply with 9. This is a convenient shorthand for EMPTY port 9.

If you are used to the port numbering, here is the port/page map

1L 8
1U 9
2L A
2U B
3L C
3U D
4L E
4U F

Ports lower than 8 have restrictions and require knowledge of internals so stay away from those for a while.