[Coco] DW and 6551

[Aaron Wolfe]

On Feb 10, 2015 11:00 PM, "RETRO Innovations" <go4retro at go4retro.com> wrote:
>
> On 2/10/2015 9:26 PM, Stephen H. Fischer wrote:
>>
>> And there is the 6551 flaw if I remember correctly voids the entire idea
of using it.
>
> What flaw is that?  The CBM folks use 6551s
all the time with no issues.
>
> JIm

I don't know the details, but I'm pretty sure the problem is limited to the
Tandy Deluxe rs232 pak.  There are other 6551 based serial cards for the
coco that can operate at higher speeds.  Unfortunately the Tandy card is
the most common.