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Appendix D Compaq/Intel Network Interface Controller Adapters
D.4 ADAPTER PROGRAMMING
Programming the adapter consists of configuration, which occurs during POST, and control,
which occurs at runtime.
D.4.1 CONFIGURATION
The adapter’s 82559 or 82550 NIC controller is a PCI device and configured though PCI
configuration space registers using PCI protocol described in chapter 4 of this guide. The PCI
configuration registers are listed in the following table:
Table D-1. NIC Controller PCI Configuration Registers
Table D-1.
PCI Configuration Registers
PCI
Conf.
Addr.
Register
Value
on
Reset
PCI
Conf.
Addr.
Register
Value
on
Reset
00-01h Vender ID 8086h 10-13h Cntrl. Reg. Base Addr. (Mem) 0000h
02-03h Device ID 1229h 14-17h Cntrl. Reg. Base Addr. (I/O) 00h
04-05h PCI Command 0000h 18-1Bh Flash Mem. Base Addr. 00h
06-07h PCI Status 0280h 2C-2Dh Subsystem Vender ID
08h Revision ID xxh 2E-2Fh Subsystem ID
09-0Bh Class Code 01h 30-33h Expansion ROM Base Addr.
0Ch Cache Line Size 01h 34h Cap-Ptr
0Dh Latency Timer 04h 3C-3D Interrupt Line/Pin
0Eh Header Type 00h 3E-3Fh Min Gnt/Max Lat
0Fh BIST 00h DC-E3h Power Mgmt. Functions
NOTE:
Assume unmarked gaps are reserved and/or not used.
D.4.2 CONTROL
The adapter’s 82559 or 82550 controller is controlled though registers that may be mapped in
system memory space or variable I/O space. The registers are listed in the following table:
Table D-2. NIC Control Registers
Table D-2.
Control Registers
Offset
Addr. / Register
No. of
Bytes
Offset
Addr. / Register
No. of
Bytes
00h SCB Status 2 19h Flow Control Register 2
02h SCB Command 2 1Bh PMDR 1
04h SCB General Pointer 4 1Ch General Control 1
08h PORT 4 1Dh General Status 1
0Ch Flash Control Reg. 2 1E-2Fh Reserved 10
0Eh EEPROM Control Reg. 2 30h Function Event Register 4
10h Mgmt. Data I/F Cntrl. Reg. 4 34h Function Event Mask Register 4
14h Rx Direct Mem. Access Byte Cnt. 4 38h Function Present State Register 4
18h Early Receive Interrupt 1 20h Force Event Register 4
Not implemented in these systems (CardBus registers).
hp/Compaq Personal Computers
Changed - April 2003
D-6