On Tue, 22 Sep 1998, Dr. Bill Studenmund wrote:
> With the 3686400-ish Hz clock we're fed, a BRG divisor of 0 (the lowest
> you can get), and the serial chip in /16 mode, the fastest baud rate we
> can get is 3686400/4/16 = 57600. The BRG always divides the input clock by
> 2, and then divides by (2+BRG constant). So /4 is the best we can get out
> of the BRG.
> 
> We do in fact support a LOT of odd rates, just not very fast ones. :-)

Ah, well that's what I meant... :) So we do support, for example, 23040
baud? (3686400/2/16/(3+2))? Or 16457 baud? :) I guess that's not as useful
as I thought it'd be though; I was thinking we did get one or two rates
between 38400 and 57600 :)

Do we _have_ to use /16 mode? It's been many years since I did anything
with the SCC, but I seem to remember there being /1, /2 and /4 modes also?
There was some limitation though... they only work for the synchronous
modes or something?