[Coco] RS DOS RS232 application?

Dave Philipsen dave at davebiz.com
Thu Apr 14 23:33:19 EDT 2016

Another thing you can do if you understand the registers in the 6551 is 
to set it all up for 230kbps and then just use BASIC to simply POKE a 
value into the transmit register.  If you have a wire between pin 2 and 
3 of the DB connector then anything you put into the transmit will show 
up in the receive register (read with a PEEK). There is a status 
register that will show you when the receive register is full or the 
transmit is empty.  With a very short, simple BASIC program you could 
write a simple terminal program that would test it out.  The only thing 
you probably would not be able to do is to shove data in there back to 
back but you could certainly test out 230k a single character at a time.


On 4/14/2016 9:17 PM, RETRO Innovations wrote:
> On 4/14/2016 8:31 PM, Barry Nelson wrote:
>> For RS DOS with source code I can't help you, but I do have source to 
>> the aciapak module and of course NitrOS9 has source for it's RS232 
>> pak driver, and being the author I have source code to XCOM9.
>>> RETRO Innovations go4retro at go4retro.com
>>> Thu Apr 14 19:58:35 EDT 2016
>>> I would like to test out a mod to my RS232 pak to bring it up to
>>> 230kbps.  Is there a simple app around that has source so I can modify
>>> it to do 230kbps on my rs232 pak and test?  Or, alternatively, is there
>>> a simple terminal that I can run to test out the various existing bps
> Well, I'm game if it's something I can dump on my CocoSDC and load.
> Jim

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