IBM 7090 User Manual

~
Machine in
Bring Up Not
Manual
B
Cycle
Interrupt
8.00.131
t
®
Gate Master
Step
I Time
Key
8.00.18.1
Fire Man
t
Ctrl 55
Reset PR
4.20.04.1
10
(D3)
t
2.11.40.1
T urn On
Man Ctrl Tgr
•
4.20.05.1
Turn Off Op
t
Pane I Ctrl T gr
4.20.16.1
Turn On Op
Panel Ctrl Tgr
~
4.20.16.1
~
Execute I nst
Turn On
t
55 Tgr
AO
I End Operati on
4.20.09.1
•
Turn Off
•
Man Ctrl Tgr
Turn On Man
4.20.05.1
Stop Trigger
•
4.20.18.1
Turn Off
~
MST Tgr
A6
Turn On
4.20.11.1
MST Tgr
I
4.20.11.1
FIGURE 6.1-8. SINGLE STEP KEY
Mach in
Manual
GjD
Ul
t
Step
Key
Fire Man
Ctrl 55
4.20.04.1
Turn On Man
Ctrl
Tgr
4.20.05.1
OnatAO t
Turn on Op
Panel Ctrl Tgr
4.20.16.1
Off with I
Key Re I er-a_se_---'fL...-_~
Turn On Mult
Step
Tgr
4.20.09.1
Turn Off
MST Tgr
4.20.11.1
Bring Up Not
B
Cycle Int
8.00.13.1
Gate Master
I Time
8.00.18.1
Reset PR
10 (D3)
2.11.40.1
t
Turn Off Op
Panel Ctrl Tgr
4.20.16.1
(
Execute
Inst
End Operation
A6
All
I
All
Fire Man
Turn Off
Ctri 55
Manual Ctrl
4.20.04.1
Tgr
4.20.05.1
Turn On Man
Op Keys to SR
Ctri Tgr
A2
4.20.05.1
4.20.14.1
T urn On Enter
Bring Up
MQ Tgr AO
SR to MQ
4.20.08.1
4.20.14.1
Gate Op Keys
to
SR
2.12.09.1
On at 14
Gate SR into
Off at Al
MQ
AS
2.12.40.1
T urn Off Enter
MQ
Tgr
4.20.08.1
All
FIGURE 6.1-10. ENTER MQ
~
Turn On Man
Stop Trigger
On at 14
,--4_._20~. 1..:..8_. 1_...J Off at A 1
K
es Mult Step
Key
Depressed
~
Mult Step
High High-Low
Speed
~w
Fire 24 ms
55
4.20.17.1
Low
Fire l04ms 55
4.20.17.1
I
17
It
Turn On
MST Tgr
4.20.11.1
+
Turn On B
Cycle Int Tgr
8.00.13.1
t
Turn on Op
Panel Ctri Tgr
All
4.20.16.1
NOTE: Prevents Turning
On Manual Stop Tgr
During 1st I Cycle'
FIGURE 6.1-9. MULTIPLE STEP KEY

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