HP41 and ProtoCODER on the road again...

[brouhaha]

(11-24-2023 05:08 AM)pilou45000 Wrote:  thank's for your answer, yes I know that it's the trigger command, but i'm looking for what's the change when loading a word (10) in the ProtoCoder. No explain in the manuals...

The Protocoder hardware is watching the ISA and SYNC lines on the bus, for the Nut processor to execute an instruction from a specific mainframe ROM address (changed between those versions), and captures the contents of the X stack register as it is shifted out on the DATA line.