> The thing is that the serial and database
> stuff might block or timeout for periods of time (say 1 to 10 seconds).
> However I need to constantly poll the serial port for data.
(Other replies about Stevens and select pertinent and should be followed).
One thing to be aware of is that the kernel driver buffers data
for the serial ports, so your chances of missing data are greatly
reduced (c.f. kernel source for more info: isn't that beautiful!!)
Parallel port is similar for output, input may be trickier.
Again, the source, Luke.
Jamie
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