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echo: hs_modems
to: WES NEWELL
from: DAVID BOWERMAN
date: 1998-03-14 23:20:00
subject: Parallel port Modems?

Wes Newell wrote in a message to Rick Collins:
 WN> I wasn't talking about the uart here. What I was getting at was
 WN> that the modem had a buffer in it and sent the data to the printer
 WN> port in burst. Then the printer port would only issue 1 IRQ for all
 WN> the bytes it gets. I would assume that it can get more than 1 byte
 WN> per IRQ. No? 
The standard bidirectional parallel port is not buffered.  Each incoming byte 
must be acknowledged before the next byte is sent.  A buffered port would not 
be that hard to implement if enough demand was seen.
Regards,
       David
--- timEd/2 1.10+
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* Origin: Frog Hollow -- a scenic backroad off the Infobahn (1:153/290)

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