IBM 7090 User Manual

1
( Mach;"
T urn Off
MST Tgr
A2
In
Manual
4.20.11.1
~
Mach
Not B Cycle
Cycle
Interrupt
All
Key
8.00.21.1
~
Fire Man
Gate Master
Ctrl
SS
I Time
4.20.04.1
8.00.18.1
t
t
Turn On
Execute
Man Or! Tgr
I Cycle
4.20.05.1
T
t
Turn On
Bring Up
Mach Cycle
Turn On
Tgr
AO
MST Tgr
4.20.10. I
4.20.10. I
{
t
Turn Off
Turn On
Man Orl
MST Tgr
Tgr
A4
4.20.05. I
4.20.11. I
~
~
Turn On
Reset Machine
15
Mach Cycle
Cycle Tgr
E5
Gate Tgr
L5
4.20.10. I
4.20.10. I
t
t
Bring Up Man
Reset
Mach
I Time Orl
Cycle Gate
Tgr
A3
4.20.16. I
4.20.10. I
L
Mach
Cycle
"A"
Key
FIGURE 6.2-4.
~
Fire Man
Or! SS
4.20.04.1
t
Turn On Man
Or! Tgr
4.20.05.1
t
Turn On Mach
Cycle Tgr
~
Turn Off Man
Or! Tgr
4.20.10.1
J
Turn On Mach
Cycle Gate
Tgr
4.20.10.1
t
Bring Up Man
Time
Or!
4.20.10.1
~
Bring Up Turn
Off MST Tgr
4.20.10.1
t
Turn Off
MST Tgr
4.20.11. I
l
Not B Cycle
Interrupt
.
8.00.21. I
I
MACHINE CYCLE KEY
164
AO
On
at
AO
A2
All
t
Gate Next
Cycle Called
for by
Instruction
~
Execute the
Cycle
t
Bring Up Turn
On MST Tgr
4.20.10.1
~
Turn On
MST Tgr
4.20.11.1
~
Reset Mach
Cycle Tgr
4.20.10. I
T
Reset Mach
Cycle Gate
Tgr
4.20.10. I
~
(Repeat r'am
II A" Unti I Inst
Complete
A4
15
E5
L5
A3

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