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IBM 7090 User Manual

IBM 7090
190 pages
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Op
Deer
Tag
Adr
12
STA
77774
13
STO
00000
14
ADD
77777
15
TRA
77773
16
HTR
00001
Search
for
Location
of
a
Word
4
This
program
looks
through
storage
until
it
finds
the
location
of
any
36-bit
word
entered
on
the
operator
I s
panel
keys.
When
the
memory
location
of
the
word
is
f01.Uld,
the
program
halts
and
the
location
may
be
read
from
the
address
portion
of
the
MQ.
If
the
start
key
is
pushed
again,
the
program
continues
to
search
sequential
memory
locations.
The
complete
contents
of
storage,
starting
from
location
20,
are
searched.
Op
Deer
Tag
Adr
0
IOCD
15
00003
1
HPR
Halt
to
set
keys.
2
ENK
3
STQ
00017
4
CLA
00020
5
CAS
00017
6
TRA
00010
7
TRA
00014
10
CLA
00004
11
ADD
00016
12
STA
00004
13
TRA
00004
14
LDQ
00004
15
HTR
00010
Read
location
from
address
part
of
MQ
16
HTR
00001
17
HTR
00000
Search
for
Location
of
an
Operation
Code
This
program
finds
the
location
of
any
operation
code
entered
on
keys
S,
1-11.
Keys
corresponding
to
bit
positions
12-35
must
be
left
up.
Op
Deer
Tag
Adr
0
IOCD
16
00003
1
HPR
00001
Halt
to
set
keys.
2
ENK
3
STQ
00020
4
CLA
00021
5
ARS
00030
6
ALS
00030
\
00020
7 ' CAS
10
TRA
00012
11
TRA
00016
12
CLA
00004
13
ADD
00001
14
STA
00004
173

Table of Contents

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IBM 7090 Specifications

General IconGeneral
CategoryMainframe Computer
Introduced1959
Transistor-basedYes
Word Length36 bits
Add Time4.8 microseconds
MemoryCore memory
Memory (words)32, 768 words