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3-18 PCI Functional Description
Register: 0x3C
Interrupt Line
Read/Write
IL Interrupt Line [7:0]
This register is used to communicate interrupt line routing
information. POST software writes the routing information
into this register as it initiates and configures the system.
The value in this register tells which input of the system
interrupt controller(s) the device’s interrupt pin is
connected to. Values in this register are specified by
system architecture.
Register: 0x3D
Interrupt Pin
Read Only
IP Interrupt Pin [7:0]
This register indicates which interrupt pin the device
uses. Its value is set to 0x01, for the INTA/ signal.
7 0
IL
00000000
7 0
IP
00000001