Specifications

PP 41x/03x 8-1
8 FLASH EPROM AND DRAM
8.1 Flash EPROM
The PP 41x/03x is fitted with one Flash EPROM part, namely an Intel 82802AC8 or equivalent
Firmware Hub (FWH). This device is soldered to the board and is programmed at the factory with
PC BIOS and factory test firmware. This EPROM will not normally be reprogrammed by the user,
but Concurrent Technologies has programming software which allows BIOS updates to be carried
out in the field when necessary, perhaps to add new features. Contact Concurrent Technologies
for a copy of this software, and for the BIOS reprogramming information, if you believe that such an
update is required.
Also programmed into the FWH at the factory is a Recovery BIOS, which allows the board to be
restarted in a basic functional mode even if the main BIOS firmware has been corrupted. See
Section 10.6 for further details of this feature.
The bottom half of the FWH device is used by Concurrent Technologies for storage of factory test
firmware. The user may overwrite the factory test firmware if desired, but should be aware that it
may be re-instated if the board is ever returned to Concurrent Technologies for repair or upgrading.
8.2 DRAM
The PP 41x/03x board supports a large amount of ECC DDR2-400 SDRAM. Two 200-pin
SODIMM socket sites allow two modules of up to 2 Gbytes capacity each to be fitted either at the
factory or in the field, giving a maximum size of 4 Gbytes. Section 2.8 describes how to fit the
SODIMM, and details the types supported. The DRAM can be accessed from the processor, the
local PCI busses, the PCI Express interfaces and the CompactPCI backplane.