10.5
CompactPCI Bridge Configuration
The BIOS provides Setup menus that allow configuration of certain features of the HiNT
®
HB6
CompactPCI Bridge, these can be found under the
CompactPCI
top level menu. The fields
available via Setup depend on the board’s operating mode.
10.5.1 System Controller Mode
In System controller mode only one Setup option is provided. This allows the user to specify
whether the CompactPCI ENUM interrupt drives NMI or a selectable IRQ via a PCI bus interrupt
(Section 10.4.1 describes how to select the IRQ).
10.5.2 Satellite Mode
In Satellite mode the board does not connect to the CompactPCI interface, therefore no Setup
menu is provided.
10.5.3 Peripheral Mode
When the board is configured for peripheral mode operation, the BIOS provides two sub-menus
for configuring the upstream and downstream windows of the HB6 bridge.
10.5.3.1 Upstream Windows
Upstream windows give the peripheral mode PP 110/01x board access to resources on the
CompactPCI bus. The HB6 bridge provides three upstream windows: upstream window 0 can
map either memory or I/O addresses; windows 1 and 2 are for memory addresses only.
The BIOS Setup menu allows the user to specify the size of each window and the CompactPCI
address that will be accessed via the window. The local address of the window is configured
automatically by the BIOS.
NOTE
The local address of upstream windows is not fixed and may change if the board
configuration is modified. Application software should always read a window’s
base address from PCI configuration space.
10.5.3.2 Downstream Windows
Downstream windows give devices on the CompactPCI bus access to resources on the
peripheral mode PP 110/01x board. The HB6 bridge provides three downstream windows:
downstream window 0 can map either memory or I/O addresses; windows 1 and 2 are for
memory addresses only.
The BIOS allows the user to specify the size of each window and the local address that will be
accessed via the window. The System Controller assigns the window’s address on the
CompactPCI bus.
10-8
PP 110/01x
PC BIOS
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com