Investigation_of_Minuteman_D17B_Computer_Reutilization_Jan71.pdf

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INVESTIGATION
-
OF
•MINUTEMAN D17B COMPUTER
t'"
REUTILIZATION
CHARLES H. BECK
January
1971
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NATIONAL TECHNICAL
INFORMATION SERVICE
Spmfod.V
25
SIN
ESTI
GATION
D
1
7B
F
MINIUTEIM AN
COMPUTER
REUT
I
L I ZAT I ON
by
Charles H. Beck
Professor and Director
SYSTEMS LABORATORY
January 1971
Prepared under- Contract No. F44620-70-C-0050 by
SYSTEMS LABORATORY
Department of Electrical Engineering
School of Engineering
TULANE UNIVERSITY
for
Directorate of
Mathematical
and Information Sciences/NM
AIR FORCE OFFICE OF SCIENTIFIC RESEARCH
Office of Aerospace Research, United States Air Force
1400 Wilson Boulevard
Arlington, Virginia 22209
ABSI'RACT
A large nix-Per of INiS-lOq Inertial Guidance Systems have been declared
excess by the 11CF which contain DlYB digital coiiputers.
This report describes
the capabilitics of these computers and many appropriate applications in which
the D17B--a highly reliable and versatile serial-binary minicomputer--can be
beneficially erployed.
Typical. areas of application are control, data
acquisition, and on-line comaunications.
A single system design will suffice for the application of several DITB's
to similar tasks.
While
such modifications are very inexpensive, the required
be developed.
This interfacing is
the key to flexible
typewriters, tele-
interfacing must still
use of these minicomputers; typical
I/O
devices include:
types, flexowriters, magnetic
and
paper tape units, printer, and card readers.
Despite the difficulties of limited documentation during the early phases of
this investigation and the associated frustration,
the
D17B
is
useful functions in the Systems Laboratory at minimal cost.
now performing
-ii
-•.2
TABLE,
OF
COYENTS
Pace
A13STPACT
LaTM
OF.
FIGURES
LIST
Wi?
TAJ3LE-S
1.0
UT'RCDUCTION
ii
i
v
1
2.0 FUNOTIONTAL
CHARIACTEISTICS
2.1
Central Pro-cessing Unit
2.2
2.3
3.0
4.0
1.en ory
Input/Output
5
5
14
20
PHYSICAL CARUMTE~RISTICIS
OFERATIOHL CHARACTERISTICS
T
CAPABILIX Y
OF
THE
D17B
CCZ4PUTPR FOR G0HERAL
AND)
CONTROL WaYMI7JII3
24
28
31
3
5.0
6.0
7.0
CAPABIL IT
OF
THE
D17B
F03 SPIECMA-PURPOSS3 CCNMUTING
D3.TB
REMIBILITY8
8.0
IIAIDARE IN1fERACE DEEVELOPI/
1
0-liT
9.0
CON"CLUSIONS
3
43
46
10.0
~RWE!iCE
BIBIGRAPHJY
i48
EL
v
i
LIE.P CF FIGUR9'S
Page
Sl
2
Minutemian D'7B co:nputer functionr.l block
diar;ram (conceptual)
Arithmetic registtur's and rapid-access memory loops'
Functional location of arithmetic registers and
rapid-access meinory loops
Five phases of DITB instruction execution compared
6
7
3
4
9
to sequential operation
i1
12.
13
15
17
"5
6
7
8
D17B
instruction word for-at
Two-address (unflagged)
D17B
instruction coding
Three-address (flagged)
D17B
instruction coding
Sectional view of the disk-type memory unit
9
10
D17B
data word fornat
Conceptual diagram of the arrangement of memory
18
19
21
23
26
loops and registers
11
12
13
D17B controJ
and octal character codes
D17B
data word coding
Minuteman
D17B
minicomputer sketch
14
15
16
17
18
19
DI7B power supplies
D17B
functional data flow diagram
Flag store instruction sector coding
Schematic diagram of the Flexowriter-Dl7B interface
Block diagram of the FlexowTriter to
D17B
interface
Block diagram of the
D17B
to Flexroriter interface
27
29
30
ho
43
42
iv

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