General Information 1-13
DMA Channel Assignments
This table shows the channel assignments for direct memory access (DMA).
DMA allows I/O devices to transfer data directly to and from memory. You
may need to select an open DMA channel if you add an I/O device that uses
DMA.
Table 1- 6 DMA Channel Assignments Table
DMA channel Assignment
0 Audio
1 Audio
2 Diskette
3 Audio
4 Cascade
5 Not used
6 Not used
7 Not used
Serial Port Addresses
The built-in serial port supports these addresses and interrupts.
Table 1- 7 Serial Port Addresses Table
Address Windows 95 Interrupt Default
3F8 COM1 IRQ 4 Modem
3E8 COM3 Serial port B
2F8 COM2 IRQ 3 Serial port A
2E8 COM4
Note: Conflicts may arise if you add adapter cards with serial ports or if you
change the address settings on your modem if you are using an
operating system other than Windows 95. You can resolve most of
these conflicts by using the BIOS Setup Utility to change serial port
addresses. See “Changing Devices and I/O Port Configurations” on
page 1-22 for more information.
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