38 PCIE-5565PIORC Reflective Memory Board
Table 3-22 PCI Interrupt Line
PCI Interrupt Line: PCIILR, Offset $3C
Bit
Description
Read
Write
*Value after
PCI Reset
7:0
Interrupt Line Routing Value.
Value indicates which input of the system
interrupt controller(s) is connected to each interrupt line of the device.
Yes
Yes
$0
*
NOTE:
This register will be altered by the system BIOS during the system boot process.
Table 3-23 PCI Interrupt Pin
PCI Interrupt Pin: PCIIPR, Offset $3D
Bit
Description
Read
Write
Value after
PCI Reset
7:0
Interrupt Pin Register.
Indicates which interrupt pin the
device uses. The following values are decoded (the
Reflective Memory supports only INTA#).
1 = INTA#
2 = INTB#
3 = INTC#
4 = INTD#
Yes
No
$1
Table 3-24 MSI Capability Structure
Offset 31::16
15:8
7:0
0x050 Message Control
0x78 (next cap ptr)
0x05 (capability ID)
0x054
Message Address
0x058
Message Upper Address
0x05C
Reserved
Message Data
Table 3-25 Message Control bit definition
Message Control bit definition: Offset 0x050
Bit(s)
Field
Description
R/W
15:9
Reserved
R/W
8
Mask Capability
Not Supported. Hardwired to 0
R
7
64-bit Address Capability Not Supported. Hardwired to 0
R
6:4
Multiple Message Enable Indicates the number of MSI signals
allocated by system software.
- 000: 1MSI allocated
- 001: 2 MSI allocated
- 010: 4 MSI allocated
- 011: 8 MSI allocated
- 100: 16 MSI allocated
- 101: 32 MSI allocated
- 110: Reserved
- 111: Reserved
R/W
3:1
Multiple Message
Capable
Indicates the number of requested MSI
messages
- 010:4 MSI allocated
R
0
MSI Enable
1= MSI Enabled
R/W