Fail-Safe Loader; Checksum Error; Example 6-4 Checksum Error And Fail-Safe Load - Compaq ES40CSLP Installation, User & Service Manual

Troubleshooting and Diagnostics

6.5.6 Fail-Safe Loader

The fail-safe loader (FSL) is a software program that loads the SRM console firmware images
from a floppy. From the FSL, you can update or load new SRM console firmware and FSL
console firmware.

6.5.6.1 Checksum Error

A checksum error detected when the console is loading at power-up indicates that the console
firmware is corrupted. When the system detects the checksum error, the fail-safe loader is
automatically activated so that you can load new console firmware images.
When a checksum error is detected, the sequence shown in Example 6-4 occurs.

Example 6-4 Checksum Error and Fail-Safe Load

Loading console
Console ROM checksum error
Expect: 00000000.000000FE
Actual: 00000000.000000FF
XORval: 00000000.00000001
Loading program from floppy................
Code execution complete (transfer control)
OpenVMS PALcode V1.3-3, Digital UNIX PALcode V1.4-2
starting console on CPU 0
.
.
.
starting drivers
entering idle loop
P00>>>Boot (Update CD)
OpenVMS PALcode V1.3-3, Digital UNIX PALcode V1.4-2
starting console on CPU 0
.
.
.
starting drivers
entering idle loop
-------------------------------------------------------------
Function
-------------------------------------------------------------
Display
Exit
List
Readme
Update
Verify
? or Help
-----------------------------------------------------------—
UPD> update
6–18 Compaq ES40CSLP Rackmount System Installation/User/Service Guide
***** Loadable Firmware Update Utility *****
Description
Displays the system's configuration table.
Done exit LFU (reset).
Lists the device, revision, firmware name, and
update revision.
Lists important release information.
Replaces current firmware with loadable data
image.
Compares loadable and hardware images.
Scrolls this function table.
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