When To Reflash The Fbd; Before You Begin; Reflashing Processes; Force Update - RadiSys EPC - 6A Hardware Reference Manual

• Bootblock
• System BIOS and BIOS extensions, Main Blocks 3-4, Parameter block 1 & 2
• FBD, the entire 512K (minus the 16K bootblock) device is reflash, no attempt is made
to reprogram the bootblock.
• RFA
• CMOS
Images suitable for update or recovery use absolute binary format (8-bit data, little endian
byte ordering).
The EPC-6A boot block XModem serial communication requires a straight-through serial
connection to the external host computer and operates at the auto-detected baud rate with
no parity, eight data bits, and 1 stop bit. Cabling between the host and the EPC-6A may be
dictated by the SCP. However, the only RS-232 signals required by the EPC-6A are Tx,
Rx, and Gnd.

When to Reflash the FBD

Install the boot block enable jumper only when updating the bootblock. Update
your bootblock only when instructed to by RadiSys.

Before You Begin

Before you begin an FBD force update flash recovery, have the following items ready
for use:
• External host computer with an installed Xmodem serial communication program,
such as PROCOMM.
• Null modem cable.
• The new images for the FBD which are contained on the utilities diskette provided
with the EPC-6A.

Reflashing Processes

You must install the following jumpers to start the reflash process:
JP2
JP2
JP1

Force Update

The force update process occurs because the boot block detects a corrupt system BIOS
image (for example, a bad checksum for main block 2) or because you installed the force
update jumper (JP2) at power up. A force update is necessary only to:
• Replace a system BIOS image damaged by power failure during an earlier flash
update process.
• Recover from accidental writes to the FBD.
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Appendix B: About the Flash Boot Device
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