HP41CL Serial Com Port Failure

[Neve]

(10-07-2022 08:42 PM)Sylvain Cote Wrote:  The bug has been found and solved.

I have successfully transmitted ROMs from macOS to macOS at all 41CL compatible speed (1200, 2400, 4800, 9600 baud). [using a loopback setup]

I have successfully transmitted, and YCRC validated, ROMs from macOS to 41CLv5 ROMs at 1200, 2400 and 4800 baud.
I am still seeing the OVERRUN message on the 41CL when I try the transfer at 9600 baud.

More tests need to be done and when completed a new version of clupdate will be published.

Sylvain

That’s great news Sylvain! Did tou figure out where the problem originated from?
I’m still unable to transmit or receive anything from any of the CL’s to and from the Mac. I’m still on Catalina 10.15.7, which is the latest my Mac can do. I even reinstalled the official Prolific driver (4.0.0). No luck.

Thank you!!