NEC 140Rc-4 manual Interrupt Request, Peripheral Device Controller

Appendix C

IRQ and I/O Port Address

The factory-set interrupt requests and I/O port addresses are listed below. Find an appropriate one to install an optional device.

Interrupt Request

The factory-set IRQs are assigned as follows:

IRQ	Peripheral Device (Controller)	IRQ	Peripheral Device (Controller)
0	System timer	8	Real-time clock
1	Keyboard	9	PCI/SCI
2	Cascaded connection	10	PCI (BMC IRQ)
3	COM B serial port (PCI)	11	BMCIRQ/PCI/ISA
4	COM A serial port (PCI)	12	Mouse
5	PCI/LPT2 parallel port (BMC IRQ)	13	Numeric processor
6	Floppy disk	14	Primary IDE (CD-ROM drive)
7	LPT1 parallel port	15	PCI