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Altera Corporation User Guide Version 11.1 2–9

October 2011

Parameter Settings

HARDWIRE_BARn

Hexadecimal H"FF000000" Hardwire base address register. n

corresponds to the base address register

number and can be from 0 to 5.

HARDWIRE_BARn is a 32-bit hexadecimal

value that permanently sets the value stored

in the corresponding BAR. This parameter

is ignored if the corresponding

HARDWIRE_BARn_ENA bit is not set to 1.

When the corresponding

HARDWIRE_BARn_ENA bits are set to 1, the

function returns the value in

HARDWIRE_BARn during a configuration

read. To detect a base address register hit,

the function compares the incoming

address to the upper bits of the

HARDWIRE_BARn parameter. The

corresponding BARn parameter is still used

to define the programmable setting of the

individual BAR such as address space type

and number of decoded bits.

HARDWIRE_EXP_ROM

Hexadecimal H"FF000000" Hardwire expansion ROM BAR.

HARDWIRE_EXP_ROM is the default

expansion ROM base address. This

parameter is ignored when

HARDWIRE_EXP_ROM_ENA is set to 0.

When HARDWIRE_EXP_ROM_ENA is set to

1, the function returns the value in

HARDWIRE_EXP_ROM during a

configuration read. To detect base address

hits for the expansion ROM, the functions

compare the input address to the upper bits

of HARDWIRE_EXP_ROM.

HARDWIRE_EXP_ROM_ENA must be set to

enable expansion ROM support, and the

HARDWIRE_EXP_ROM parameter setting

defines the number of decoded bits.

Table 2–1. PCI MegaCore Function Parameters (Part 3 of 5)

Name Format Default Value Description

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 359 360

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