What has the DM41 extra over the HP42s?

[Thomas Okken]

(11-05-2020 07:55 AM)Werner Wrote:  But you can use GETKEY to simulate key assignments ;-)
If only GETKEY would catch the EXIT key... that has bothered me since the beginning, I do not see the logic. MENUs catch the EXIT key, so why not GETKEY? Neither catches R/S, so there's no danger of getting 'stuck'. It keeps me from having a perfect GETKEY MENU simulation (in the Matrix Viewer). Would it be too much to ask for it to be changed in Free42? After all, it doesn't break backward compatibility..

Hmm. Interesting. Yes, as long as GETKEY doesn't catch R/S, catching EXIT does seem safe, although maybe a bit non-obvious since the "running" annunciator is off during GETKEY.

The HP-41 Extended Functions version of GETKEY catches all keys, even ON, USER, PRGM, ALPHA, Shift, and R/S. That would be a bridge too far in Free42, I think... It looks like the HP-42S designers didn't like that behavior, either; it may be significant that they gave the 42S GETKEY a different XROM code, unlike how they handled other X-Fcn functions they borrowed.