dn> >    You don't need to write an interrupt driven program to get

dn>around this

dn> > problem.  Just use direct reads from and writes to the ports

dn> > on the UART instead of using BIOS routines.  That should give

dn> > you enough speed.

dn>

dn>The point of using interrupt driven methods is to service a

dn>hardware device WHEN IT NEEDS TO BE SERVICED.  Directly reading



   Yes, I know.  But the original post stated that slow computers couldn't¨
handle moderate serial speeds when using the BIOS, and I was pointing out
that¨ it might not be necessary to go to the effort of writing an interrupt
driven¨ program to solve this problem (the problem being that the BIOS is
too slow).

Also directly polling the UART will not require changes to the structure
of¨ his program (he can write functions to poll the UART which take the
same¨ parameters as the BIOS calls if he wants) so it will be a quick
change.





   cya





--- SuperBBS 1.17-2 (Reg)