[HP48] Kermit setup

[Christoph Giesselink]

(03-24-2023 12:07 AM)EugeneNine Wrote:  Kermit is available for Windows so your tera term isn't the only thing available

https://www.kermitproject.org/k95.html

On the URL above I found no download link but I found

https://www.kermitproject.org/ckw10beta.html

showing:

C-Kermit 10.0 Beta.08/Windows-04, Dec 15 2022, for Windows

And I'm not satisfied. First issue is the "set send packet-length 94" setting.

A packet length of 94 is the default packet size with is supported by the HP48.

The length of a packet includes the SEQ number until the last checksum or CRC byte. So a

set send packet-length 94

should not exceed the packet length of 94 byte.

The suggested setting

set send packet-length 64

produce packets with a size of 69 byte!

The not counted 5 bytes are SEQ-No., TYPE D and the 3 CRC bytes. This is wrong!

So a

set send packet-length 89

produce a packet length of 94 bytes!

So any value greater 89 produce a packet size of 95 bytes, which it's out of specification.

Another issue, I installed "C-Kermit 10.0 Beta.08/Windows-04, Dec 15 2022, for Windows" om a 2nd PC with the same .ini settings. I'm not able to transfer the same data, I see garbage on the screen of the HP48 in Kermit sever mode after sending the first packet. I haven't investigated the send data so far. So the actual beta version isn't very stable near to useless.