[WriteLog] serial interface PCI expansion boards

[N2TK]

Can there be a posting of boards that work and don't work that have been
tried?
Tony

-----Original Message-----
From: writelog-admin@contesting.com [mailto:writelog-admin@contesting.com]On
Behalf Of Joe Subich, K4IK
Sent: Wednesday, July 10, 2002 22:27
To: 'Steve Dyer'; 'Dave W7DPW'; 'Ron Stordahl'; n2tk@arrl.net;
aa5au@bellsouth.net; 'Writelog (E-mail)'
Subject: RE: [WriteLog] serial interface PCI expansion boards


> Dave is correct. I was wrong when I said it was bit banging.
>
> A more detailed reference to the 16550 is
> http://www.national.com/ds/PC/PC16550D.pdf.
>
> This doc even includes some timing charts for baudot!
>
> Any serial card using the 16550 or greater should work fine.
>

Unfortunately, some of the 16550 "work alike" UARTs are not ...
they either fail to support the five bit mode in their internal
microcode or the board designers fail to implement the support
hardware (clock generator, etc.).

As Ron says, check your card first if you can.


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