NP-41 Emulator (may be)

[Chris Chung]

(01-18-2018 07:08 PM)Massimo Gnerucci Wrote:  Updated, all went well.
New catalog speed (after ON-D) shows now readable labels.

One thing to note: when I turn off the unit in PRGM mode, and I turn it on again it still is in PRGM mode; if I interrupt a CATALOG by turning the calc off, when I turn it on it picks up cataloging from where it left.

This is different than the real 41: it seems that pressing ON it simply interrupts whatever is doing and turns off display.
Even when running a program, pressing ON the calc goes off, pressing ON again the program continues with the goose running.

My implementation is just put everything in sleep, so the unit wakes up where it left off. And all the registers are maintained in FRAM / non-volatile memory, so there is no change in the emulator status.

I will need to know how the real 41 behave in order to emulate it truthfully. Do you think forcing a [CLX] key or clearing some register values (of the 16 status registers) will do? Open to suggestions.

(01-19-2018 03:03 AM)Mark Hardman Wrote:  Chris,

Thank you for the latest update. Just so you know, I would prefer to send my beta version of the board back to be migrated to the better PCB when they become available.

Warmest regards,

Mark Hardman

I am hopeful the new PCB design will resolve the H/W intermittent problems.