NoV-64D and HEPAX Questions

[Sylvain Cote]

(04-03-2024 11:05 PM)BitWiz Wrote:  I am trying to fully understand what can be configured and how on the NoV-64D and its HEPAX emulation.

(04-03-2024 11:05 PM)BitWiz Wrote:  I have a handle on the NoV-64D command register at 0x4100.
I have attached a graphic bit outs of the control register as I understand them. If you want the original Word for it please PM me.

Your attached page is pretty good. I have similar pages in my HPCC 2020 Presentation. (see below)

(04-03-2024 11:05 PM)BitWiz Wrote:  I cannot find, in the HEPAX documentation, how the HEPAX module in QROM mode assigns what 4K RAM block is configured to a particular HP-41 Page.
I couldn't find HEPAX ROM commands for this in either the Hepax or NoV-64D manuals.

See below and HEPAX Module Owner's Manual Volume 2, Section 7: HP-41 internal structure, page 97, The HEPAX module

(04-03-2024 11:05 PM)BitWiz Wrote:  The NoV-64D can address it's ROM blocks anywhere in the HP-41 ROM address space (using the clonixconfig program). Can the HEPAX do this? Where is it in the documentation? What commands do I need to do to do this?

The HEPAX and the NoV-64 modules support dynamic page relocation.

At each power up

1. the HEPAX ROM is located at page 8
2. then it try to find an unused page between page 5 and page 15
3. if it find an empty page it then relocated itself to that page
4. if not it then display the ILL CONFIG message
   

(04-03-2024 11:05 PM)BitWiz Wrote:  Sylvain, I'm trying to understand it so I don't bother you as much.

Good, you will retain more informations if you work harder for it.

Note: there is a bug in the latest Clonix Config. release that prevent you to use the #0xx 16K Flash Unmapped feature.
Diego has corrected the bug for the two HEPAX versions and the updated version is currently being tested by Diego and me.
Preliminary tests shows that the bug has been removed, but more complete tests are needed before Diego release it on his website.