HP-41CL Remote Keyboard / Scripting

[rocket.scientist]

(04-16-2021 02:34 PM)Sylvain Cote Wrote:  

(04-16-2021 01:21 PM)PeterP Wrote:  Pat, have you considered auto-start modules or magnetic cards?

The Auto-Start/Duplication module always execute the RECOVER program (LBL "RECOVER") at power-on.

There is also the flag 11 that will continue the current program at power on.

Code:

LBL "F11"   // flag 11 demo program entry point
SF 11       // set auto start flag 11 
OFF         // power off the calculator
BEEP        // executed when user press the ON button
END         // flag 11 demo program exit point

Both SF 11 and mag card would be an excellent option for fully autonomous operation of the 41C. Instead what I am thinking is a way to have the operation of a 41C coordinated with some other asynchronous process.

The updating of a 41CL is a good example, and fairly well known. There is an elaborated dance that needs to happen between a PC and a 41CL to manage the periodic updates, with commands at the PC coordinated with commands on the 41CL. While Sylvain and Monte (and others I am sure) have developed the excellent "clupdate" tool to facilitate, there is still a lot of manual coordination between PC and calc. It would be nice, since the full process is so well known, to have the PC more fully automate the process.

**BIG GOTCHA HERE** This highly automated approach does not accomodate any error conditions that may arise. I am not sure it is possible to permanently brick a 41CL, but I do not want to find out.

-Pat (KG5YPQ)