[Coco] Deal to first 3 responders

[Christian Lesage]

Gene Heskett wrote:
> That was the name of an article in Rainbow, on how to install a normal acia 
> (sy6551) serial comm chip, in a std coco2, and do it in such a way that under 
> os9, it shared the regular serial ports connections, but with I believe, 
> better flow controls.
>   
Nice mod! The only drawback I can see is that it still uses only 4 wires 
to communicate with the outside world, so true hardware flow control is 
out of question. I've been looking for doing something similar, but I 
was thinking about putting the 6551 inside the Multi-Pak interface 
instead. Yes, it would imply doing address decoding and RS-232 level 
translation, while this mod merely uses one additional chip. And yes, I 
know Roger sells RS-232 paks, but my goal is to free an additional slot 
on the Multi-Pak interface.

Christian