HP41CL Serial Com Port Failure

[mfleming]

(08-27-2022 11:04 PM)Neve Wrote:  I don’t understand what’s wrong. Was a bug inadvertently introduced with the latest rom mentioned above?

As a sanity check, I tried updating a 41CL that had already been updated to the latest 220722 and it connected and responded as expected.

Quote:12:01:23 Report Outdated ROM images [BoardGeneration: second]
12:01:23 Report 0 outdated pages, out of 512 pages, spread over 0 Flash blocks, estimated update time: 00h 00m 00s
12:01:45 Received CLOSE_CHANNEL_REQUEST(0x57)
12:01:45 Sent CLOSE_CHANNEL_RESPONSE(0x58)
12:01:49 Serial COM12 closed.

It seems the rom update itself isn't the source of the problem. If two 41CL's behave the same, I'd think the problem lies with the serial cable. The clupdate program would have errored out if it tried to open a nonexistent serial port. The only other possibility - a mismatched baud rate?

~Mark