[Coco] CoCo bitbanger does 115200 bps !

[Gene Heskett]

On Tuesday 04 April 2006 12:47, Roger Taylor wrote:
>Hear ye, Hear ye!
>
>I'm proud to announce that the same exact code that I wrote for doing
> 57600 bps communications over the bitbanger port yields *115200 bps*
> on a CoCo 3 (or any CoCo with a 68B21) when the clock speed is
> doubled !!  Yes, it was that easy.  Ofcourse, nothing at all about
> the process is easy, but doubling the bps rate was a matter of just
> doubling the CoCo's clock rate... but a 2mhz-rated PIA is required
> which meant the CoCo 3.
>
>I just confirmed quite a few error-free transmissions from the PC to
> the CoCo for displaying on the screen, and boy does it arrive fast
> and look good!  I'm using a laptop and a desktop PC both to transmit
> in my tests, and I'll be adding more sending devices to the list as
> soon as I can for more testing.
>
>I'm using 100% 6809 code with no hardware modifications whatsoever to
> any CoCo.  We're talking original CoCo, original bitbanger port,
> original CPU, original 6821 PIA,.. you get the point!
>
>Any comments?  :)
>
Just one Roger, in the form of a question.  Can this be done while 
running nitros9?

/me ducks and runs. :)

-- 
Cheers, Gene
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Copyright 2006 by Maurice Eugene Heskett, all rights reserved.