IBM 7090 User Manual

Suppress Pri
Op 00
3.01.00.1
(Block Halt Control)
Note: Black AR-PC
During L Cycle of HTR
Machine
in Manual
Disp
Stg
Key
Fire Man
Ctri SS
4.20.04.1
Turn on Man
Ctri Tgr
4.20.05.1
Turn On OP
Panel Ctri T gr
4.20.16.1
Turn on Disp
Stg Tgr
4.20.08.1
Not L Time
Call
8.00.16.1
,
Turns On
Turn Off Man
Ctri Tgr
4.20.05.1
Bring Op
Disp Stg Ctri
4.20.08.1
End Op
Control
4.20.12.1
End Op in
E Time
8.00.00.1
Go to E Tgr at
IlO(D3)
.,
Turn on End
Op Tgr at ElO
+
Turn Off
MST Tgr
4.20.11.1
+
Mst I Tgr
8.00.18.1
+
Reset PR
10
(D3)
2.11.40.1
1
Suppress SB
to SR, TR, PR,
IC4.20.14.1
+
Suppress PC
Adv
4.20.14.1
f
Inhibit Op
Keep to PR
2.11.40.1
•
Op Keys to
SR
4.20.14.1
1
FIGURE 6.1-5. DISPLAY STORAGE
Route Address of
SR Through Adders,
Addr SW, to AR 19
~
Turn Off Op
Panel Ctr! T gr
19
4.20.16.1
+
Go to E Trg
On By Not L
19
(D3)
Time Call
8.00.12.1
,
Mst E Tgr
11
8.00.19.1
+
Gate SB to
SR
E 7
2.12.50.1
•
Turn On End
Op Tgr
E 1
0
8.00.09.1
•
Gate PC .... AS
AS .... AR
E 11
~
Go to I Time
8.00.12.1
+
Turn On Man
0
n 14
A6
Stop Tgr
4.20.18.1
Off Al
t
Turn On
All
MSTTgr
4.20.11.1
~
Reset Disp
Stg Tgr
4.20.09.1
A8
17

IBM 7090 Specifications

General

Category	Mainframe Computer
Introduced	1959
Transistor-based	Yes
Word Length	36 bits
Add Time	4.8 microseconds
Memory	Core memory
Memory (words)	32, 768 words