1-8 Technical InformationInterrupt Level Assignments
IRQ System Resou rce
NMI I/O channel check
00 Reserved, interval timer
01 Reserved, keyboard controller
02 Reserved, cascade inter rupt from sl av e PIC
03 COM2*
04 COM1*
05 LPT2 (Plug and Play option)/audio/user available
06 Diskette drive
07 LPT1*
08 Real-time clock
09 Reserved
10 USB/user available
11 Windows Sound System*/user available
12 PS/2 mouse p ort (if pres en t, else user available)
13 Reserved, numeric processor
14 Primary I D E (if present, else user avai lable)
15 Secondary IDE (if present, else user available)
* Default; setting ca n be changed.
DMA Assignments
DMA Resource
00 Audio
01 Audio/parallel port
02 Diskette drive
03 ECP parallel port/audio
04 Reserved, cascade channel
05 Available
06 Available
07 Available