21554AA Intel, 21554AA Datasheet - Page 19

• Manufacturer Part Number: 21554AA
• Manufacturer: Intel

Specifications of 21554AA

• Lead Free Status / Rohs Status: Supplier Unconfirmed

2.3.2
2.3.2.1
Table 2-2.
Table 2-3.
2.3.2.2
Table 2-4.
21554 PCI-to-PCI Non-Transparent Bridge Evaluation Board User’s Guide
Note: Any other application software is the responsibility of the user.
Flash ROM Programming
Dbflash.exe is an MSDOS based program that allows the flash ROM attached to the 21554 to be
erased and updated with new images. When dbflash.exe is run on a system that has a 21554
installed on the PCI bus, the program scans all the PCI buses looking for the 21554 component.
When found, the program identifies the 21554 PCI location and starts the update process that was
selected on the command line.
Board Setup
Table 2-2
utility.
Switch Configuration for FLASH Programming
a.
Jumper for FLASH Programming
Running DbFlash.exe
Make sure both DBFLASH.EXE and DOS4GW.EXE are in same directory or environment path.
Dbflash.exe takes parameters to tell it what to do. A typical flash programming update will require
the user to specify the flash block to update and the new image to use.
This example will flash image 'NewRomImage.bin' into block 0 of 21554 expansion ROM. During
the next boot of the PC, the BIOS will find this image in the ROM and if it has a PCI compliant
Expansion ROM header the image will be loaded and executed by the system BIOS during POST.
For more information on how this works, read the PCI Local Bus Specification, V2.1 (or newer).
DBFLASH.EXE Command Summary
Dbflash /e
Dbflash /bx image.bin
Jumper Flash CE ROM Control
Switch
Pack
J19
J24
Default setting.
Dbflash /b0 NewRomImage.bin
Command
When installed, enable pr_cs control of the ROM CE .
When removed, disable pr_cs control of CE ROM.
and
Switch
SW3
Table 2-3
ROM Socket pr_cs
Erase entire flash ROM contents
Program block x with image.bin
Switch
give the DE1B55401 switch configuration for using the DBFLASH.EXE
Down
Description
Program and access
memory using
DBFLASH.EXE.
Switch
Up
a
Will erase all blocks
If image larger than 1 block, program will continue into
the next block until entire image is loaded.
Enables DBFLASH access to the ROM
Socket or to the flash memory. See
on page
1-6.
Description
Comments
Operation and Installation
Figure 1-1
2-3