AppendixD Troubleshootingand Common Questions
©NationalInstruments Corporation D-23 SerialHardware and Software for Windows
Whati s the maximum baud rate supported and howcan Iset it?
The maximum baud rate supported is 460.8 Kbaud for RS-485 and
115.2 Kbaud for RS-232. Toset the baud rate, use the SetCommState
Win32function and pass the actual value of the baud rate in the BaudRate
field of the DCB structure.
Howmany interrupts are required for my serial interface?
Ifyou have a shared IRQ card or an isolated serial card, you need one
interrupt per card. This is the hardware that currently ships with
Windows NT.
Ifyou have an older, non-shared IRQ card, you need as many interrupts as
there are ports on the card.