[Coco] DW and 6551

[Allen Huffman]

> On Feb 10, 2015, at 10:35 PM, Darren A <mechacoco at gmail.com> wrote:
> 
> Actually the 6551 can do 115 kbps.  All you have to do is configure the
> baud rate generator to use the External Clock setting. This will cause the
> bit rate to be equal to 1/16 the crystal frequency.  The RS-232 Pak has a
> 1.8432 MHz crystal (1,843,200 / 16 = 115,200).
> 
> The only real question is whether or not the level shifting circuitry in
> the Tandy pak can operate at that speed.


I wasn’t paying too much attention to the list during the time, but I seem to recall (this was brought up recently) that Roger Taylor had mentioned this and was running his stuff at that speed.

I could not find those posts but I am sure with some digging the details would turn up.

		— A