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Grant Beattie grantb at nait.ab.ca
Fri Nov 29 01:45:35 GMT 1996


On Thu, 28 Nov 1996 Mcgonegal.Will at etc.ec.gc.ca wrote:

> Why bother changing the PC XTAL.  As I have posted in the past, it is 
> possible to communicate to the 8192 baud ALDL with the standard PC RS 232 
> port and a few external parts.  We've done it at out lab.  You can't get 
> exaclty 8192 baud without the XTAL change, but the UARTs are set up to 
> handle a slight difference in communication frequencies.

RS-232 will handle a max of about 4% error.  Usually one tries to keep 
within 2% just in case the other device is out too.  Therefore is 
everyone is within 2% the worst case would be 4%.

8228 is with 0.5% of 8192.  Shouldn't be a problem even on a bad day.

GB



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