Specifications

Appendix F: Re-programming the flash chip
105
Using phlash.exe to re-program the flash chip
1. If you plan to include the Boot Block when re-programming the flash chip,
connect the Boot Block Write Enable pins:
A. Turn system power off, then remove the EPC-3305 from the CompactPCI
chassis.
B. Connect these pins:
2. Boot system into MS-DOS with no memory managers running.
3. Insert the Flash Boot diskette into the floppy drive.
4. Start the re-programming process by entering the drive the floppy disk is in
followed by the phlash command. For example:
a:\phlash
When finished, the phlash program displays a message.
5. Remove the Flash Boot diskette from the drive when the drive stops accessing
the disk.
6. If you re-programmed the Boot Block, remove the Boot Block write enable
jumper and return the system to normal operation:
A. Turn system power off.
B. Locate the BIOS configuration jumper block and disconnect the Boot Block
Write Enable pins.
C. Replace the EPC-3305 in the CompactPCI chassis.
D. Power up the EPC-3305.
Do not install this jumper unless a Boot Block update is required. A BIOS
boot block rarely changes and seldom, if ever, requires re-programming.
1
10
2
9
Pins 3 and 8 required to
re-program the Boot Block
If your system runs Windows 95, or Windows 98, press the F8 key during
boot to enter DOS.
For detailed information about creating a Flash Boot diskette, see Before
you begin on page 102
Determining when disk access has stopped is difficult. Typically, the disk
drive makes anywhere from 1530 accesses, then stops making access
sounds for about 5 seconds. At this time you should remove the disk.
If disk access sounds resume, the re-program process is repeating. Wait
until disk access again stops, then remove the disk.