929494_Micromemory_7405_Add-on_Memory_System_Nov77.pdf

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MICROMEMORY 7405
ADD-ON MEMORY SYSTEM
lnformation contained in this Technical Manual
is disclosed in confidence and may not be dupli-
cated in full or in part
by
any person without
prior written approval
ot~the
Memory Products
Division. Its sole purpose is to provide the user
with adequately detailed documentation so as to
efficiently install, operate. maintain, and order
spare parts for the equipment supplied. The use
of this document
tor
all other purposes is specif·
featly prohibited." .
11
ELECTRONIC MEMORIES
&
MAGNETICS CORPORATION
12621 Chadron Avenue. Hawthorne. California 90250
I
Telephone: {213) 644-9881
November
rn77
~ ~~~--------~----------
• Par00rc1ph No.
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This manual contains
informatic~~
_
r~q~ired
to install
1
operate, and maintain the MICROMEMORY
74~5
Add-on
Memory System
1
part number 929494
1
manufactured by
Electronic Memories and Magnetics Corporation,
Hawthorne, California.
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This 7405 Memory System is self-contained
1
with memory
power supply and interface electronics_ for complete
. .
~pmpatibility
with PDP-:11 Computer Systems. manufactured._____.
---J
by Digital Equipment Corporation,
Landscape
~aynard,
13
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Massachusetts.
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1
The MICROMEMORY
7405
Memory System consists of an Electronic Memories
I
standard. chassis containing one to four
32K
x
16*
MICROMEMORY 3000QD ·cards,
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a
~ower
Supply and a special UNIBUS-adaptable Interface Card. Switches on
1-~·
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GENERAL
·
.
.
4
5
6
7.
9
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19 ;
20
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the Interface Card can be set to designate the Memory System for operation
~within
an address block recognizable by the Computer.
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The Memory System is modularly organized in
32K
sub-blocks with each
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Memory Card constituting one._ sub-block. · Thus, the System can be populated
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ii1dicates system VeTsiOi15 based On
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nuniber of Memory Cards and,
-~,~;i~~c:~~~~j~;;;~ f~~i~e
1-1
illustrates Card
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and Power Supply locations.
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1-4.
POWER
SUPPLY
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18
19
2
9
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30
31
32
33
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The Power Supply is capable of supplying all necessary de operating
vo~tages
for a full-populated Memory Module. The Power Supply also provides.
I
115
·vac t'o the cooling fans located within the Memory Module. For detailed
I
de~c-ription
of Power Suppi'y see Technical Manual TM929219.
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.
22
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._
_,
35
36
37
38
39
40
2S
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-~Each
.Memory Card
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.a .complete
32K
x
16
(or
18)
memory subsystem on 'a
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single printed wiring board, including semiconductor memory array and support.
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MEMORY CARDS
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for
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41
42
43
·:
el~ctronics.
'Refer to Technical Manual
TM929162
for description of the Memory
44
45
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card. -
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53
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1-9. The Interface Card is a buffer/controller unit installed between the
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PDP-11 UNIBUS and
th~ M~mory
Cards that constitute the Memory System.
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INTERFACE CARD
30
31
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CAPACITY
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1--11.
The Interface Card can pTovidc buffering and control for up to 124K
~-=· -:;~-
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ltbit words ;(including two p:_rity_
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9-bit bytes, depending on
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mode.
MODES OF OPERATION
Dr0'":
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4
5
9
10
11
1-1.3.
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The
Interface Card can accommodate the Memory System for operation
f
7
8
12
13
14
iri
the following modes:
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Read/Restore Word,
Clear/Write Word,
Exchange Word (Read/Modify/Write)
Read/Rest9re Either Byte.,
.Cl
ear/Write Other Bytes
·'-'-""-
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ACCESS
TIME
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V~=tical
IlJustration
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1-.15.--·-Access and cycle times are as follows:
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SYSTEM OPTION
Access Time
Acc.ess· 'Time with parity -
·':ion
Cycle Time
14
15
16
271
2P
30
3i
l-'16.
29
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1-17.
t
The
Memory System can optionally include pTovisions for checking and
I
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17
18
19
21
33
3.J.
35
36
37
38
39
40
4'1
32·f
sto:r.:_~.~~- t~?
pal:'i ty _bi ts_ .....
W~en
this option is included, each MemoTy Card must
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include two
..
extTa
..
bit
.
storage capacity.
i ........ - - -· ·- . .
.
Card capacity must be
32K
x
18~
t
1-18. SYSTEM SPECIFICATIONS
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1-J9. A sununary of -Memory System spec1f1cat1ons is contained in Table 1-2.
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Fo·r details of Memory Card specifications, see Technical Manual TM92864 7. ·
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MEMORY CARD
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POWER
MEMORY. CARD 1
MEMORY CARD 2
MEMORY CARD
3
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4
5
6
ID
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11
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IE
M_. __.·----· .
-·~-·-···--·-
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·;·'.'.:
SUPPLY
13
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17
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20
2,
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Figure 1-1.
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8
Memory Module Component Location
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Width fer Full Page
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241
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Table
1-1.
Illustr2tion
or
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15
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17
18
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Landsc~;2
Memory System Version Chart
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VERSION
MEM~RY
CAPACITY
CARD
LOCATION
*
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281
29
34
35
37
38
39
A
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B
c
30.
31
32_ -·
Chassis
with
I/O
and Power
Supply
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331
36
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12 8 K
x ,
18.
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=
Interface Card P/N
929402-002
..M
=
Mem~ry
Card
P/N
928647-305
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