Vax 613 0S Instruction Manual download pdf (Page 23)

USER

GROUP

NEWS

PATH=$tmppath

ICO~IPORT=

ICOMRETRY=

ICOMSPEED=

tmppath=

PS1=$

Issue 3 - Vol 2

export

ICOMPORT

ICOMRETRY

ICOMSPEED

PATH

MDP

APPLICATIONS

Only one

set

would be needed ror

anyone

user.

The

only side effect

that

the

script

does

that

once an

environment variable

set, there

no way

unset

except

set

null,

ICOMPORT,

ICOMSPEED,

ICOMRETRY

are all

set

but

set

null.

As you should know,

the

speed ror the ICOMSPEED, the

port

ror the

ICOMPORT,

the

retry

value ror ICOMRE-

TRY,

and

the

path

names ror

the

icom40 package

and

the tek bin package are

dependent

on the specific users

setup.

The

prompt

characters may be

anything

the

user wishes, this

just

lets them know

they

are in

"emulator

mode".

A similar

setup

could also

made ror

the

setup you are running on

your

system.

Victor Riley,

MDP

Engineering

8560

INITIALIZATION

PROCESS

EXPLAINED

This explains how to

startup

the 8560

and

what

happens during the procedure.

With

the

HALT

IRUN

switch

the

HALT position,

turn

both

the AC power switch on

the

rear

the 8560

and

the DC switch on the

rront

or the 8560

"on".

The AC switch causes

the

light

illuminated.

The

DC switch causes the green

light to be illuminated. In a

short

while, the red led on

the

hard

disk will be lit.

This

means

the

hard

disk

up to operational speed.

Now move the

HALT/RUN

switch to the

RUN

position

and

push

the

RESTART

switch up

then

release.

This

action causes the LSI 11/23 processor to

"jump"

to address 773000

and

start

executing a

program

there. This

ROM

does the Initial

Program

Load (IPL).

The

ROM

checks

the

system.

there are prob-

lems discovered, an interactive portion or the

ROM

takes over

and

allows one to check the system rurther.

See

the

8560/61 Installation

manual

ror more information

about

this process.

When

the 8560

ROM

gets through

the

system checkout,

then looks ror a floppy diskette in

the

drive to

see ir

should load rrom it. If there

no floppy disk, the

hard

disk

checked.

What

the

ROM

looking

ror

a block zero "boot" block. This 512

byte

program on either the floppy disk or

hard

disk

loaded

into

8560/61 memory

address

which

point

the

ROM"

jumps"

address 0

and

that

program is

executed.

Should block zero

not

exist on either the floppy disk or hard disk,

the

ROM

takes

this

as an error

and

again

goes into an interactive mode so

the

user can take some action (like calling service).

When

block zero is

loaded correctly,

will

take

one

two actions.

a floppy disk is used

(must

the

STANDALONE

diskette) the message

"rbr

filename

boot>"

is printed

The

user would

then

enter

a valid STAN-

DALONE

command (see the 8560 Reference Manual, section

STANDALONE).

one is

trying

IPL

off

or the

hard

disk,

the

block zero program will load

the"

/tnix"

file. If this

file

cannot

be round on

the

hard

disk,

the

block zero program will

the

message "filename

boot>".

Note

the

lack

"fur".

The

block zero program

giving the user a chance

enter

a filename

other

than

"/tnix"

in which

load.

this occurs,

the

file

"/tnix"

cannot

be round

and

this

considered a good time

restore the 8560/61.

Should this be

the

case, see the 8560 System Users Manual, section 8.

Now

that"

/tnix"

loaded, control

passed

it.

TNIX

will

start

off

the

"swapper" routine as process 0

and"

/etc/init"

as process

"/etc/init"

then

does many housekeeping chores, one

which

to execute

"/bin/sh"

with the command

file"

/etc/rc".

What

is nice

about

this

is,

"/etc/rc"

can

be modified by

the

system manager to customize the system to specific needs.

"/etc/rc"

allows the user

run"

syschk",

but

NOT

make changes (only STANDALONE "syschk" will

permit

changes).

The

programs"

/etc/update"

and

ir on the 8560/61,

"/etc/cron"

are also

started

this time.

That

is why

the

user MUST

not

skip

through"

/etc/rc";

this process

might

not

started

(see the 8560 System Rererence Manual, section

December

Hl83

TEKTRONIX

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