Booting From The Srm - HP 9000 Series 310 Service Information Manual

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Copyright 1985.
Hewlett-Packard Company.
All Rights Reserved.
BOOTROM Rev. A
Bit Mapped Display
MC68020 Processor
Console Keyboard at 14
HP-IB
HP98020B
HP98626 at 2
HP98625 at 8
HP98642 at 9
HP98629 at 20
HP98629 at 21
1572906 Bytes
: HP8290X. 804. 0
Bad Hardware
: REMOTE. 20. 1. 8
No Device
: REMOTE. 21. O. 8
2B SYSTEM_BASIC
: ROM
B B
A A
H H
Z
+
: HP9895. 801. 2
3B SYSTEM_BAS
: HP7908. 803. 0
1b SYSburp
: REMOTE. 20. O. 8
1F SYSTEM_FORTRAN
2F SYSTEM_FORTH
1Z SYSTEM_4TH
1P SYSTEM_PASCAL
SEARCHING FOR A SYSTEM (Press RETURN To Pause)
RESET To Power-Up
Figure 4-7. Boot Display with Errors
1H
Chapter 5 explains troubleshooting the computer and bus expander using self-test errors dis-
played on the monitor or LEDs.
Booting From The SRM
Placing bootable ass on sector oriented devices is fairly straight forward. On LIF devices an
as file must be created, and on SDF and HP-UX devices a boot area must be created. For the
SRN1, ass to be booted must be placed in system files in the directory /SYSTEMS.
Because the SRM is a shared resource there are some unavoidable and peculiar behaviors that
can be exhibited if the /SYSTEMS directory changes while the Boot ROM is scanning it. During
the scanning or booting process, the order of the directory can be re-arranged, as files can
be deleted, or added. This means that the Boot ROM may show an as that does not exist
anyrnore, may not show an as that does exist, or may never show an as that has always been
there.
If an as that does not exist is chosen to be booted, the Boot ROM will stop with the error NOT
FOUND. A reset is required to try again.
As long as the /SYSTEMS directory is stable, which is usually the case, everything will work as
expected.
Boot Rom Functions
101