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Additional Packet Delay option request

Posted: Mon Jul 22, 2024 6:29 pm
by Jeff_Birt
Hi,

Love CoolTerm and use it for talking to a lot of various retro computing gear. The ease of configurability is a big help as even though an older system might be able to communicate at 19200 it may need some combination of character delay, line delay, packet delay to compensate for a very tiny RX buffer (1-2 bytes) and slow processor speed.

On one particular unit, the Sharp PC-1500 (TRS-80 PC-2), a ~100ms delay, is needed after the first 28 characters of a file (the header) for processing (on all files except BASIC in plain text/ASCII). After that only a short line delay may be needed.

It would greatly speed up file transfer speed if the packet delay could be set to only be used n times. In my case only 1 time. I'm sure this is probably a 1 off request but you never know if it might come in handy on some other system.

Re: Additional Packet Delay option request

Posted: Fri Aug 09, 2024 1:50 pm
by roger
Hi,

This is indeed a 1-off request. I haven't gotten this one before :-)

Luckily, CoolTerm can be automated, and what you need can possibly be achieved with a simple Python script (using the CoolTerm.py) module that comes with the CoolTerm download.
- Load the file into the script
- Send the first 28 bytes
- wait for 100ms
- Send the rest of the file

Another option would be to use hardware flow control if your Sharp PC supports it.

I hope this helps.

Roger