If the firmware doesn’t appear to be updated
Though Flash EPROM is very reliable, it can fail. If the HP processor probe
determines the Flash EPROM is not working, it will try to use the boot code
in its Flash EPROMs. The only useful operation the boot code allows is
running prgflash.
Make sure the current version information is correct by comparing it
with the version numbers of the update software.
Try updating the firmware again.
If none of these steps solves the problem, contact your local HP
Representative.
If there is a power failure during a firmware update
If there is a power glitch during a firmware update, some bits may be lost
during the download process, possibly resulting in an HP processor probe
that will not boot up.
Set switch S4 to OPEN, then cycle power. This tells the HP processor
probe to ignore everything in the Flash EPROM except the boot code.
Repeat the firmware update process.
Set switch S4 to CLOSED, then cycle power. This restores the
HP processor probe to its normal mode.
Updating Firmware
If the firmware doesn’t appear to be updated
74
Summary of Contents for E3494A
Page 3: ...iii ...
Page 4: ...iv ...
Page 8: ...Contents viii ...
Page 9: ...Part 1 Installation Installation 1 ...
Page 10: ...Installation 2 ...
Page 11: ...1 Connecting to the Host Computer Connecting to the Host Computer 3 ...
Page 34: ...Connecting to the Host Computer To verify serial communications 26 ...
Page 35: ...2 Connecting to the Target System Connecting to the Target System 27 ...
Page 39: ...Part 2 Using the HP processor probe Using the HP processor probe 31 ...
Page 40: ...Using the HP processor probe 32 ...
Page 63: ...Part 3 Reference Reference 55 ...
Page 64: ...Reference 56 ...
Page 65: ...4 Designing a Target System Designing a Target System 57 ...
Page 72: ...Designing a Target System PowerPC 603 JTAG Interface Connections and Resistors 64 ...
Page 73: ...5 Specifications and Characteristics Specifications and Characteristics 65 ...
Page 77: ...6 Updating Firmware Updating Firmware 69 ...
Page 83: ...7 Solving Problems Solving Problems 75 ...
Page 102: ...Solving Problems To obtain replacement cables 94 ...