HP Series 37 User manual

Series 37
Self Test and Maintenance Mode
Part i'io. 30457-90003
E1184
~lJ ~:~K'AWo
8010 Foothills Blvd., CA 95014
Reference Manual
Printed in u.S.A. 11/84

NOTICE
The
information contained in this document is subject to change without notice.
HEWLETT-PACKARD MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT NOT LIMITEP TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not
be liable for errors contained herein or for incidental or consequential damages in connection with the
furnishing, performance or use of this material.
Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that
is not furnished by Hewlett-Packard.
I
This document contains proprietary information which is protected by cOPYrIght. All nghts are "
reserved. No part of this document may be photocopied, reproduced or translated to another language
without the prior written consent of Hewlett-Packard Company.
Copyright © 1984 by HEWLETT-PACKARD
COMPA"S'Y

PRINTING HISTORY
New editions are complete revisions of the manual. Update packages, which are issued between editions,
contain additional and replacement pages to be merged
into the manual by the customer. The dates on
the title page change only when a new edition or a new update
is published. No information is
incorporated into a reprinting unless it appears as a prior update; the edition does ·not change when an
update is incorporated.
The software code printed alongside the date indicates the version level of
the software product at the
time the manual or update was issued. Many product updates and fixes do not require manual changes
and, conversely,
manual corrections may be done without accompanying product changes. Therefore, do
not expect a one to one correspondence between product updates and
manual updates.
First Edition
... . Nov 1984
NOV 84
iii

LIST OF EFFECTIVE PAGES
The List of Effective Pages gives the date of the most recent version of each page in the manual. To
verify
that your manual contains the most current information, check the dates printed at the bottom of
each page with those listed below. The date on the bottom of each page reflects the edition or subsequent
update in which that page was printed.
NOV 84
iv
Effective Pages
all
Date
. Nov 1984

Section 1
GENERAL INFORMATION
Introduction. . . .
Required Hardware
Self Test ROM Code.
Self Test Executive
Power-on Self Test .
Maintenance Mode. .
The Remote Console
Establishing The Remote Console
Link.
Disconnecting the Remote Console. . .
Section 2
OPERATING INSTRUCTIONS
Introduction ....
Keyswitch Capabilities. . . . .
Power-on Self Test Execution.
Maintenance Mode. .
Test Mode ...... .
Remote Operator Interface
Section 3
COMMAND DESCRIPTIONS
Introduction. . . . . .
Maintenance Mode Commands
Automatic
Warmstart
Auto Restart
Coldstart
Coolstart
Disc
..
Dump.
Help ..
Load.
Newsystem
Panel.
Reload
Run ..
Speed.
Start
Tape ..
Test ..
Update
Warms
tart
CONTENTS
1-1
I-I
I-I
1-2
1-2
1-2
1-3
1-3
1-4
2-1
2-1
2··2
2-3
. 2-5/6
. 2-5/6
3-1
3-1
3-1
3-2
3-2
3-3
3-3
3-3
3-4
3-4
3-5
3-5
3-5
3-6
3-6
3-6
3-7
3-7
3-8
3-8
NOV 84
v

CONTENTS (continued)
NOV 84
vi
Test Mode Commands.
All
Channel.
CPU.
Exit.
Help.
Iomap.
Memory.
PON ...
Section 4
SOFTPANEL
Introduction.
Command Descriptions
Display Memory .
Modify Memory
...
Register Operations.
Execution Control
Input/Output Operations.
Miscellaneous Commands.
Memory Breakpoints.
CPU ROMS Date Code 3444 Exceptions.
Appendix A
Error Codes
TIC
Error Codes
TIC Test Section 1
TIC Test Section 2
TIC Test Section 3
TIC Test Section 4
TIC Test Section 5
TIC Test Section 6
TIC Test Section 7
PIC Test Error Codes
PIC Test Section 1
PIC Test Section 2
PIC Test Section 3
PIC Test Section 4
PIC Test Section 5
PIC Test Section 6
PIC Test Section 7
PIC Test Section 8
PIC Test Section 9
CPU Test Error Codes .
Memory Test Error Codes .
3-8
3-9
3-10
3-11
3-12
3-12
3-13
3-14
3-15/16
4-1
4-2
4-2
4-3
4··4
4-4
4-5
4-5
4-5
4-6
· A-I
· A-I
· A-I
· A-2
· A-2
· A-2
· A-3
· A-3
· A-4
· A-4
· A-4
· A-5
· A-5
· A-6
· A-6
· A-6
· A-7
· A-I
· A-8
· A-9

FIGURES AND TABLES
LIST OF TABLES
Table 2-1. Keyswitch Capabilities.
Table 2-2. LED Indications and Error Conditions.
Table 2-3. Maintenance Mode Commands.
Table 2-4. Test Mode Commands.
2-1
2-2
2-4
.2-5/6
NOV 84-
vii

GENERAL INFORMATION
__ ---ll~
INTRODUCTION
This manual describes the Self Test for the HP 3000 Series 37 in both power-on (PON) mode and
maintenance mode.
The Self Test
is the primary turn-on test. It tests for a functioning CPU, Memory, Termianl Interface
Controllers (TICs), Peripheral Interface Channels
(PICs), and Synchronous Intermodule Bus (SIMB). Self
Test ')Jill also verify the cold load path.
The TIC
is part of the Advanced Terminal Processor for the Series 37 (ATP37).
Self Test executes when any of the following happens:
• power-on via the keyswitch
• invoked by the operator while in maintenance mode
• restart after power failure
REQUIRED HARDWARE
The minimum hardware required to run Self Test to completion is a console (connected to TIC channel
l!port 0) and the HP 3000 Series 37 which includes:
CPU
Memory
TIC
The
power-on self test sequence is CPU, Memory, TIC, and PIC. If a required peripheral is not connected,
all tests performed before
that peripheral is required are valid.
To
use certain features of the Softpanel a breakpoint board is required.
SELF TEST ROM CODE
The ROM code is made up of three sUbsets: executable ROM code and two types of loadable ROM code -
executable code and ROM-based messages.
The executable ROM code loads the first series of self tests from loadable ROM t 'Jde into Writable Control
Store (WCS) upon power-on. Control is then passed to the code loaded into WCS.
NOV 84
1-1

General Information
This code tests the CPU chip and slow WCS. It then loads the Code Loader and the second series of tests
into Slow WCS.
The second series of tests check additional portions of the CPU chip, fast WCS, and the CPU register file.
When these tests are successfully completed, the maintenance panel code
is loaded into WCS and enabled.
Then the Self Test Executive is loaded into WCS and control is passed to it.
SELF TEST EXECUTIVE
The Self Test Executive determines if an Auto Restart after power failure is to be performed. Auto
Restart tests a subset of the memory tests.
If a normal power--on sequence occurred, the Self Test Executive tests all of memory.
The Self Test Executive then tests all of the I/O cards installed in the system and speed senses the system
console. The slot numbers
of J II cards tested are displayed elfi the console. The failing cards have the
error code displayed in inverse video. A prompt is issued, unless Auto Warmstart is enabled. If Auto
Warmstart is specified, control is passed to the Loader Code and the Autowarmstart prompt is displayed.
POWER-ON SELF TEST
When power is applied to the SPU, the executable ROM code loads into Writable Control Store (WCS) the
initial part of Power On Selftest (PON) and a ROM Code Loader. The code in WCS is then executed.
The basic CPU
chip test, a general WCS test, and a ROM code loader are in ROM. This code tests some of
the Series 37 CPU chip functions. The last CPU chip function tested is all of Slow WCS and then
additional CPU test modules are loaded. These modules test the remaining CPU chip functions. When
these tests are complete,
the Maintenance Panel module, the Control module, and the Self Test Execntive
module
are loaded. Control is then passed to the Self Test Executive.
The Test Executor loads the memory tests, the TIC test, and the PIC test. The memory tests are then
executed. If the memory tests are successfully executed, the console TIC and all of the other channels in
the SPU are tested. The results are displayed on the LED display and the console if speed sensing was
successful.
The
Control module initializes the TIC and displays the following prompt:
H for help->
MAINTENANCE MODE
The maintenance mode microcode contains the code for Maintenance Mode, and Test Mode commands.
Unlike earlier version. C'f HP ~OOO comrllters, there is no special :nai!1ter..:l.I:cc i'r~cessor. The
maintenance microcode resides on the CPU board. The Control B detection logic is enabled on the TIC
that is in slot I channel I of the SPU card cage. Only the console connected to Channell/Port 0 or the
remote console
can issue Control B (Be) to enter Maintenance Mode.
NOV 84
1-2

General Information
When you
enter Maintenance Mode software execution halts. Note that the MPE environment is
protected only if you execute a DUMP, DW, EW, HELP, RUN, or SPEED command. if any other commands are
executed, MPE is not protected.
'MiMiW+
The following procedure should be attempted only by trained Hewlett
Packard Service Personnel.
In some cases, Control B will not be detected when entered on the System Console or the remote console.
In this case, Maintenance
:v1ode can sometimes be entered by closing the ATTN switch on the main card
cage.
It is on the right hand side looking in the front, and is on the bottom printed-circuit assembly
(PCA) in the cardcage, directly below the display board.
THE REMOTE CONSOLE
The remote console capability allows the system to be halted or started, and Maintenance Mode commands
to
be executed from a remote location. When the remote console is in operation the local console can be
used to monitor all activity.
Establishing The Remote Console Link
There are three steps to establishing a link to the remote console.
1. Issue a speed command to set the System Console to a speed that is compatible with both the
modem and the terminal to be used in the remote location.
2. Set the keyswitch to the remote position. This causes the Data Terminal Ready (DTR) to
temporarily drop, disconnecting any pre-established links. MPE will log
off the session on
Port 7.
3. The remote site must establish the modem link. The REMOTE light will light indicating
that REMOTE mode has been established. This will disable the keyboard on the local
console and enable the keyboard on
the remote console. Both scree·ns will display identical
information.
While in remote mode
the local keyboard can be enabled by turning the keyswitch to position "2"
(LOCAL). As long as the REMOTE LED remains lit, the remote console will mirror the activity of the
local console. The remote keyboard can
be enabled by turning the keyswitch back to position ,; 3"
(REMOTE). Thus the keyswitch acts as a toggle to enable either the local or remote console's keyboard
and
as long as the connnection has not be broken (by turning the keyswitch to either position "0" or "1")
the screens on the local and remote consoles will display the same information.
NOV 84
1-3

General Information
Disconnecting the Remote Console
Remote mode is exited by turnlI\g the keyswitch to positlOll "I" (NORMAL). This C<luses the DTR to drop
temporarily (3-4 seconds) which disconnects the modem. MPE will log off the session on Port ~ and the
REMOTE light will go out The remote consl'le will no longer display the same information as the lo~al
console.
\lOV 84
1--4

OPERATING INSTRUCTIONS
I~
INTRODUCTION
This section describes how to operate both the Power-on Self Test and the Maintenance Mode Microcode.
The primary function of the Power-on Self Test (PON) is to verify the correct operation of the logic
necessary
to load the system.
The maintenance mode microcode contains the code for interpreting maintenance commands and the
Series 37 Self Test. Since the Series 37 does not have a special m:lintenance processor, th" maintenance
microcode resides on the CPU board. The Control B detection logic is on the TiC. Only the TIC in slot I
(channel 1) can have the the Control B logic enabled. To enable the logic, the keyswitch must be in either
the T,ocal or Remote position. Note also that only the System Console connected to port 0 (local) or port 7
(remote) can execute the Maintenance Mode commands.
KEYSWITCH CAPABILITIES
The Keyswitch directly effects the function of certain Maintenance Mode commands. These are described
in Table 2-1 Keyswitch Capabilities.
Table 2-1. Keyswitch Capabilities
Keyswitch
DC
Looping
PON
TIC
Position
Enabled
Command SLOT I
Allowed
0 NO
N/A N/A N/A
I NORMAL YES
NO YES YES
2 LOCAL (from NORMAL) YES YES YES YES
2 LOCAL (from REMOTE) YES YES NO
NO
3 REMOTE YES IYES
INO
NO
CONTROL B
Enabled
N/A
NO
YES
YES (Local Console)
YES (Remote Console)
NOV 84
2-1

Operating Instructions
POWER-ON SELF TEST EXECUTION
Immediately upon powering on the CPU, Power-on Self Test begins execution. The LED display will flash
"0", "I ", and "2" ( the "2" may not be visible) as the first Series of tests are loaded into the WCS. Then a
"5", indicating card 5 of the CPU, is displayed as the CPU tests He executed. Upon successful completion
of the CPU tests, a "B" will be displayed as the memory tests a.e executed. Upon successful completion of
the memory test, a "C" will be displayed as all of the I/O cards in the system are tested and the System
Console is speed sensed.
If any of the tests fail, the failing assembly will be indicated in the LEOs as well
as
on the System Console if the console path is operational. Table 2- 2 lists the LFO indications and error
conditions.
If PON completed without error, and Auto Warmstart was enabled, control will be passed to the loader
code.
If PON looping was previously specified from the test mode, the Power·-on Self Te,,! will be looped until
the loop count rearhes O. However, if the keyswitch was changed to the" 1" (NORMAL) position, the
looping
feature is disabled and PON will be executed only once. When all tests have been successfully
completed Maintenance Mode is entered. The following prompt is displayed:
H for heip->
If any errors are reported on either the LED or the System Console contact your local HP Service
Representative.
LED Indication
Flashing "B"
Flashirig "c"
Flashing "c"
followed by
Flashing" I"
Flashing "5"
or
Steady "5"
Flashing "n"
Flashing "E"
followed by
Flashing "n"
Steady "0"
Steady "1"
Steady "21;
NOV 84
2-2
I
Table 2-2. LED IndicatIOns and Error Conditions
Meaning
Memory Test failed.
Console Failed
to Speed Sense.
The Console TIC is bad.
The CPU card failed.
The Card in Slot n failed.
For each card in slot n of the extender that failed.
Processor is not executing micro-instructions or looping on first ones.
Proces<or
hung in the initial WCS b00tup from RO\f
Initial WCS boot up from ROM failed the data integrity test.
A
retry is being attempted.

Operating Instructions
MAINTENANCE MODE
Maintenance Mode allows the System Operator to perform a number of functions. The major functions
which can be performed
are the LOAD/START/DUMP and Test commands. LOAD and START load MPE
from tape or disc respectively, and the DUMP command loads the dump software from the START device.
The
TEST command allows the System Operator to run the Power-on Self Tests with failures displayed on
the System Console. The Test Mode also allows a limited looping feature. Tests can
be looped with the
count parameter. Count must be an integer between \ and 9999, with I being the default. The looping
feature
is disabled when the keyswitch is in the position "\" (NORMAL).
The LOAD, START, and DUMP commands require a channel and device specification unless the default
device has been set up by the ",P" and ", C" options. The DUM P command always defa \II ts to the START
device.
The", P" option updates the LOAD or START device data in the TOC and initiah~, the LOAD or
ST ART. The TOC is a permanent storage area for system information which includes the default START
and LOAD device numbers. The TOC LOAD or START data can also
be updated with the ",C" option
but the LOAD or START
is not periormed. Thellid channels are 1, 3, or 4 for main and 9-\3 for the
extender.
RUN attempts to "run" the system if it arrived in Maintenance Mode via a Halt or Control B.
The "AR" command allows the System Operator to try another Autorestart if the system has given up (5
tries d approximately 90 seconds each). The other LOAD/STMrr type commands (COO, COL, DIS, NEW,
RELO, TAPE, UPDA, and WAR) use the LOAD or START deivce as stored in the TOe. Table 2-3 lists the
valid Maintenance Mode Commands. For details on the correct syntax
of these commands refer to Section
III "COMMAND DESCRIPTIONS".
NOV 84
2-3

Operating Instructions
Table ]-3. Maintenance Mode Commands.
Command
I
---li
,
!
Refer to Note I below.
DESCRIPTION
AR
COLDSTART
Retry Auto Restart.
Perform COLDST ART using LOAD device.
::::::: ::~':::i:: :~I:::T~::ede::;er::f:o:: ~:::0~\beI0W. I
COOLSTART
DISC
!
DUMP
Perform DUMP using indicated or START device.
DW
Disable auto Warmstart.
EW
Enable auto Warmstart.
HELP
Display HELP messages.
LOAD
Perform LOAD (has options). Refer to Note 2 below.
NEWSVST£M Perform initial software installatIOn.
PANEL Enter Soft Panel.
RELOAD
Perform RELOAD using LOAD device. Refer to Note 1 belc,w
RUN
RUN system after Control B halt.
SPEED
All"w the System Operator to lhange System Console ,peed
START Perform START (has options). Refer to Note 2 below
TAPE Perform LOAD USlIlg LOAD deVIce
Refer to '\;ote 2 below.
TEST Go to Self Test mode.
UPDATE
Perform UPDATE using LOA;) device. Refer to Note 1 ';p.!(\w.
WARMSTART
Perform WARMSTART using START device. Refer to Nc'te 1 below.
Notes:
1. These commands do not allow changes to the software configuration (no I"-'lTl.\L
dialogue).
NOV 3i
2-4

Operating Instructions
TEST MODE
The Test Mode allows the System Operator to select portions of the Power-on Self Test or an additional
CPU test wit., failures displayed on the System Console. The Test Mode also allows for looping up to
9999 times, the default is I.
The Maintenance mode TEST command accesses the Self Test mode. Table 2-4 lists the commands
available in Test Mode.
REMOTE OPERATOR INTERFACE
The remote System Operator interface is enabled if all of the following conditions are met:
• The Console is connected to Port 7 of TIC in Slot I via modem or hardwi ,'? configuration.
• The keyswitch is in Remote (or Local after having been in Remote, but not s\'(;tched through
Normal) mode and the REMOTE LED is on.
• The System Console, the modem, and the remote como Ie are all operating at the same baud
rate.
• The hardwire configuration requires a standard 25 pin straight through mod~m cable with
pins 4 and 22 to be tied together.
Table
2-4. Test Mode Commands
r---' ------------~--------------------------------------.--------------_.
Command
Description
~'------------~------------------------------------------------------1
ALL
CHANNEL
CPU
EXIT
HELP
IOMAP
MEMORY
PON
Run all self tests 1-9999 times.
Loop Test
of channel 1-9999 times.
Loop CPU test
1-9999 times.
Return to Maintenance Mode.
Lists Test Mode Commands
and display ROM version numbers.
Loop IOMAP
1-9999 times.
Loop memory test
1-9999 times.
Run (or loop) Power-on Self Test.
NOV 84
2-5/6

COMMAND DESCRIPTIONS
INTRODUCTION
This section provides descriptions of each section of the Series 37 Self Test code. Included here are
definitions
of the two modes, Maintenance Mode and Test Mode, and their associated commands.
Examples
of error messages can be found in Appendi.' A.
MAINTENANCE MODE COMMANDS
Maintenance Mode is indicated by the "H for help->" prompt. Maintenance Mode initializes the TIC
for communication
with the System Operator and allows the following commands:
AR (Retry AutoRestart)
Coldstart
Coolstart
Disc
Dump
DW
EW
Help
Load
Newsystem
Automatic Warmstart
Panel
Reload
Run
Speed
Start
Tape
Test
Update
Warmstart
The Autowarmstart feature of Series 37 systems is enabled by the EW (Enable Warmstart) command.
Automatic
warmstart is disabled with DW (Disable Warmstart). The state of the Automatic Warmstart is
maintained during power off. If Autowarmstart is enabled, the Series 37 will issue the following prompt
after being powered on and PON is successfully completed:
WARMSTART? (yiN)
The user has 15 seconds to abort the automatic warmstart. If the user types anything other than "y"
[RETURNI , or IRETURNI alone, the system will abort the automatic warmstart, return to Maintenance Mode,
and display the
"H for Help" prompt. If the user types nothing the system will perform an automatic
warmstart after waiting 15 seconds. The commands that affect the Automatic Warmstart feature are:
EW
DW
Enable autoWarmstart
Disable autoWarmstart
NOTE
The Automatic Warmstart feature is indepedent of the keyswitch position.
NOV 84
3-\

Command Descriptions
Auto Restart
The AUTO RESTART (AR) command allows the System Operator to retry the Power Fail Auto Restart
capability if the Auto Restart was not successful because a disc was down or broken. To initiate an Auto
Restart, the cause for the Auto Restart failure must
be corrected, and then the System Operator may
attempt an Auto Restart. Auto Restart should be successful as long as the memory has been powered, the
Auto Restart flag in memory location 0.0358 (hex) is AAAA (hex), and the data in memory on the disc is
uncorrupted.
Following the
Power-on CPU test, an abbreviated version of the memory test is executed to find the size
of memory if the Auto Restart flag at $0.0358 is set to $AAAA. Upon successful execution of this test,
all of the
I/O cards are tested and communication is established with the System Console. When these
steps have completed, execution
is transferred to the Auto Restart entry $500I in the Loader code
module. The
WCS boot cuie is executed with the Auto Restart flag and LOAD/Start flags with the start
device set into register file location $EF.
If the Auto Restart should fail because the disc was not ready, up to 4 retries will be made. If the retries
are not successful, return will be to the Maintenance Mode "H fo r he 1 p- >" prompt. The System
Operator may type AR for up to 5 retries when the disc is made ready.
The correct syntax for this command
is:
AR
Coldstart
The COLDSTART command loads the system microcode and software from the default tape unit and allows
the System Operator to perform the COLDSTART operation for MPE or run
nus. Auto cold/oad can be
run without intervention by the System Operator.
COLDSTART differs from LOAD in the following ways:
• No channel or device parameters are allowed.
• The default LOAD device always used.
• No opportunity is given to change the software configuration (no INITIAL dialogue\'
The correct syntax for this command is:
NOV 84
3-2
COL[dstart]

Command Descriptions
Cooistart
COOLSTART loads the system microcode and software from the default disc unit and allows the System
Operator to
perform the COOLSTART operation for MPE.
COOLSTART differs from START in the following ways:
• No channel or device parameters are allowed.
• The default START device is always used.
II No opportunity is given to change the software configuration (no INITIAL dialogue).
The correct syntax for this command
is:
coo [lstart]
Disc
DISC loads the system microcode and software from the START device (normally the system disc) and
allows the System Operator to perform COOLSTART or WA:~MSTART operations for MPE or run DUS.
The DISC command differs from START in the following ways:
e No channel or device parameters are allowed.
~ The default Start device is always used.
The correct syntax for this command
is:
DIS[{c}{k}]
Dump
Dump loads the Dum', software from the indicated device and transfers execution to the dump software.
The
DUMP command 2.lIowS optional channel and clevic9 parameters to indicate the location of the
dump software (normally the system disc). F no parameters are supplied, the dump software is loaded
from
the default START device.
DUMP uses the START default device number stored in the TOC RAM, or the System Operator may specify
a
different deivce. If WCS is not valid, ('ontrol ,10re is restored from the specified devil .. ::. The ,uftJump
software is then loaded and control is transferred to it.
The load execution code test for v3lid parameters and transfers control to $5FFF if the microcode resides
in
WCS. If no micrcode is loaded, control is passed back to the Maintenance Mode.
'fhe correct syntax for this command is:
H for help->Q!:!.[mp] [chan,dev]
NOV 84
3-3

Command Descriptions
Help
The HELP command lists all of the commands along with their parameters.
HELP displays the version code of the currently loaded microcode or "mainset microcode is NOT
loaded" if no microcode is loaded and then displays all of the commands available in Maintenance Mode.
2-LOCAL (from Normal)
H
for help->~
mainset microcode is NOT loaded
Auto warmstart disabled
last system stop code {hex)=0022
AR - Re-attempt Auto Restart,
COL[dstart] ,
COO[lstart] ,
DI[sc] - Start from Disc,
DU[mp] [chan, dev],
DW - disable auto warmstart,
EW - enable auto warmstart,
L[oad] [chan, dev[,{P[erm] ]].
C[hange]}
NEW [system] ,
2
OCAL (from Normal)
H for help- >
load
PArnell - Enter soft-panel,
REL road] ,
RUN,
SP[eed] ,
ST[art] [chan, dev[,{P[erm] ]],
C[hange]}
TA[pe] -Load from Tape,
TE[st],
lIOD[ate] ,
WAR[mstart] ,
The LOAD command loads the system microcode and software from the indicated or default tape unit and
allows the System Operator to perform COLDSTART, RELOAD, or UPDATE operations for MPE or to run
DUS.
If channel and device are specified, LOAD uses these parameters as the channel and device for the
LOAD. The default LOAD channel and device are also updated in the TOC register C if the optional
perm or change parameters are specified.
The LOAD command allows the System Operator to perform a LOAD using the default LOAD device
number stored in the TOC RAM. specify a different device, or just change the default device. The LOAD
is performed by loading the load execution code, the WCS boot code, and transferring control to the load
execution code.
The load execution code tests for the valid l.OAD parameter and updates the .!'. '3d device in the TOC
RAM if requested. Control is then transferred to the WCS boot code. If a parameter error occurred or jf
only a change to parameters was requested. contrnl is pas~ed back h' M~inten8nce Mr)de.
If the parameters are valId and If a LOAD or START is l.O be dOlle, control is passed to the \VCS boot code
which loads the HF3000 instrudil"l set from the disc or tape and proceeds with the LOAD or START.
NOV 84
3--+