[Coco] CoCoNet status

[Darren A]

On 12/6/08, Roger Taylor wrote:
>
> <snip>
>
> Get the idea?  Is all of this fast??  YES.  57600 bps on a CoCo 1 or
> 2, and 115200 bps on a CoCo 3 through the bitbanger port.  USB serial
> dongles work great, with any COM#, not just 1 through 4.  I use COM8
> in my tests.

Roger,

Have you tested this with a CoCo 1?  Recent tests I've done have led
me to the conclusion that the CoCo 1 hardware is not capable of
transmitting 57600 bps through the bit banger port, although it can
receive data at that speed. My guess is that the opamp used for the
level translation to +/- 12 volts can't operate that fast.  You will
probably have to lower the transmission speed or specify a CoCo 2 as
the minimum requirement.

Darren