Interrupt Level Assignments; Dma Assignments - NEC SP B-Series Service And Reference Manual

IRQ
NMI
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
* Default; setting can be changed.
DMA
00
01
02
03
04
05
06
07
1-8 Technical Information

Interrupt Level Assignments

System Resource
I/O channel check
Reserved, interval timer
Reserved, keyboard controller
Reserved, cascade interrupt from slave PIC
COM2*
COM1*
LPT2 (Plug and Play option)/audio/user available
Diskette drive
LPT1*
Real-time clock
Reserved
USB/user available
Windows Sound System*/user available
PS/2 mouse port (if present, else user available)
Reserved, numeric processor
Primary IDE (if present, else user available)
Secondary IDE (if present, else user available)

DMA Assignments

Resource
Audio
Audio/parallel port
Diskette drive
ECP parallel port/audio
Reserved, cascade channel
Available
Available
Available