9020/9030/9040 Environmental/Installation/PM 2-15
1 Megabyte RAM Board Installation
Instructions
Read the following information then follow the instructions that apply to the installation you
are
performing. For example, if you are installing the
RAM
Boards
in
a 520 computer you would
perform
all
steps that begin with:
(ALL),
and
(520).
RAM
Boards
1 Megabyte
RAM
Boards can only be installed
in
pairs. Any combination of 256K, 512K,
and
pairs
of 1 Megabyte boards can be used.
Load Board
If a system
is
shipped with 1 CPU, 1 lOP,
and
one 512K
RAM
Board,
it
will
also have a Load Board
(09855-66525)
in
the top occupied slot. When the 1 Megabyte
RAM
Boards are
added
to the
stack, the Load Board
is
no longer required
and
must be removed (assuming the 512K
RAM
board
remains
in
the system).
When the only
RAM
boards
in
the stack are 1 Megabyte
RAM
boards, a load board
is
required
if
there are six
or
less. The load board should be removed when there are more than six 1 Megabyte
RAM
boards
in
the stack,
or
if
there
is
a mixture of 256K, 512K,
and
1 Megabyte
RAM
boards
in
the
stack.
Any time the
Processor Stack configuration
is
changed so that
it
contains one of the
above
configurations, a Load Board
is
required. The load Board (09855-66525)
is
a replaceable part
in
spares. If the load board
is
used
it
must be
in
the top OCCUPIED slot of the Processor Stack. Do
not leave any empty slots between finstates or boards.
Boot Loader ROM
When the Processor Stack contains 1 Megabyte
RAM
Boards, Boot Loader ROM Rev. B (09020-
80001)
must be used,
and
UNIX
4.0
or
Basic 2.0 software must be used.
Boot Loader
ROM 09020-80000 can be used with
UNIX
4.0
or
Basic 2.0 (or any previous software
versions) as long as the stack
DOES NOT contain a 1 Megabyte
RAM
Board.
Boot Loader
ROM Rev. B (09020-80001) can be used with any
RAM
configuration but MUST use
UNIX
4.0 or BASIC 2.0 software (any earlier versions of software cannot be used with this
boot
loader).
Access Times
When the 1 Megabyte
RAM
Boards are installed
in
a computer, the access times
will
be slower. The
customer may notice this slower process time during operation.
System Integrity Test
The previous SFT tests (Part Number 09020-lO010 Rev. 2.0) are not compatible with the Basic 2.0
Operating System. The updated version of the SFT must be used with this operating system.
The
4.0 HP-UX Operating System contains the same System Functional Tests (SFT) as the pre-
vious
HP-UX. They are located
in
the
CEo
utilities dictionary.