Re: [hylafax-users] Multi serial solutions

[Andrew Rinaldi <andrew.rinaldi@xxxxxxxxxxxx>]

Andrew Rinaldi wrote:
> choose a board that has a "PCI Status Register"...

Sorry, that should have said "PCI Interrupt Status Register".  This 
register allows the serial driver to examine the status of all board 
interrupts without polling each port in tern.  This register was a 
standard feature of the first multiport serial cards when they were 
launched in the 1980's and is invaluable for optimising interrupt 
service routine performance.

This is one reason why we can run 128 fax ports simultaneously on a 
1.2GHz PIII machine.

Regards

Andrew Rinaldi
Mainpine Developer Support
USA +1 503 822 9944 | UK +44 8458 909438
andrew.rinaldi@xxxxxxxxxxxx | www.mainpine.com


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