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andrastantos.cray-sim/target/cos_117/deadstart_sequence.txt
2020-09-09 15:11:45 -07:00

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B.1.2 DEADSTART
The following procedure describes how to deadstart the lOS from either
tape or disk. The deadstart tape and disk contain the following files:
Tape Disk Description
------ --------- -------------------------------
FILE 0 TAPELOAD Tape deadstart program
FILE 1 DISKLOAD Disk deadstart program
FILE 2 DMP I/O Processor dump program
FILE 3 KERNEL The IOS Kernel
FILE 4 KERNEL.OV IOS overlays
FILE 5 COS COS
FILE 6 PARAM Parameter file
FILE 7 CLEARIO Clear IDS program
FILE 8 DSDIAG IOS deadstart diagnostic control program
FILE 9 DSDIAG.OV IOS deadstart diagnostic overlays
Step Procedure
---- ------------------------------------------------------------
1a. Mount the deadstart tape on the Peripheral Expander tape unit.
or
lb. Mount the deadstart disk in the Peripheral Expander drive unit.
2. Set lOS maintenance panel toggle switches as follows:
Switch Setting
Loading From Octal Binary
--------------------------- ------- --------
Tape 22 010 010
AMPEX disk unit 60 110 000
CDC disk unit 27 010 111
3. Depress IOP-O MC (or MASTER CLEAR on CRAY-1/A) and DEADSTART
buttons on the Power Distribution Unit or lOS chassis maintenance
panel (depending on your site).
4. Respond to the prompt at the MIOP Kernel console as follows. (If
the FILE @MTO prompt is not displayed, verify that a tape is
mounted on the Peripheral Expander tape unit.)
Prompt Response
----------- ------------------------------------------
FILE @MTO: Enter 3 and press RETURN (loads Kernel and
performs initialization)
FILE @DKO: Enter either the directory name (dir/) to
display a menu of all files in requested
directory or enter the
Kernel filename (dir/Kernel) to load the
Kernel and perform initialization.
Press RETURN.
============================================================
NOTE
When starting from disk, the Kernel expects the Kernel
overlays to have the same Kernel name and appended with
a ".OV" (for example; a Kernel with file name lOS must
have the overlays with filename IOS.OV).
============================================================
The Kernel goes through its initialization sequence and displays
the following message on the Kernel console of all lOPs:
IOP-n KERNEL, VERSION x.xx SNsn, site. mm/dd/yy hh:mm:ss
n Number designating the lOP where the console is
attached
x.xx Software version number
sn Mainframe serial number
site Installation location
mm/dd/yy Kernel assembly date
hh:mm:ss Kernel assembly time
The following message can appear on the BIOP or DIOP console only:
DISK NOT READY CH nn
The message indicates that the configured system disk has not
responded to attempts to select it. The disk might be disabled at
the lOS Power Distribution Unit cabinet, at the lOS deadstart
panel, or at the disk unit itself (maintenance mode). This
message may not indicate a problem since the operating system
being loaded in the mainframe controls which configured devices
must be present for successful operation.
5. If your IOS does not have a Peripheral Expander clock, two prompts
are issued at the MIOP Kernel console for the current date" and
time.
============================================================
NOTE
If your lOS is equipped with a Peripheral Expander
clock, you are not asked to enter date and time. See
SETIME command (section 2) to set or reset the
Peripheral Expander clock.
Proceed to step 6.
============================================================
After the "ENTER DATE:" prompt, enter the date in the following
format:
mm/dd/yy
Once the date has been accepted, the MIOP Kernel console displays
the "ENTER TIME:" prompt. Enter the time in the following format:
hh:mm:ss
6. Proceed to the Cray Mainframe Deadstart procedure (subsection B.2).