IBM 7090 User Manual

Fire Man
Or! SS
4.20.04.1
Turn On Man
Or! Tgr
r-_----1._-'O:..;.n:..;at AO
Turn On Disp
Ind Tgr
Off at Al0
Turn Off
Man Or! Tgr
SI to SR
2.12.13.1
A2
FIGURE
6.1-6. DISPLAY INDICATORS
Mach
in
Manual
~
Eff
Addr
Fire Man
Or! SS
4.20.04.1
,
Turn On Man
Orl Tgr
4.20.05.1
•
Turn on Disp
Eff Addr Tgr
4.20.09.1
AO
,
Turn Off
Man Orl Tgr
4.20.05.1
,
J
,
,
Bring Up Disp Minus On Disp
Hold Tag
Eff Addr
Eff Addr Ori
Reg Reset
4.20.20.1
4.20.20.1
2.08.01.1
,
t
Calcu late Eff
Hold AD3 Carry
Addr
Tgr Reset
2.10.65.1
2.12.76.1
,
t
SR 18-35 to Gate XR
Adders P-17
Specified
AO (D8)
to AD
2.12.16.1
2.12.26.1
,-
XR to Adders
AO (D8)
NOTE: Specified
2.12.19.1
by Bit in SR Positi
t
18,19, or 20
,
ons
Adders
3-17
Carry to
to AS
Adder 17
AO (D8)
AO (D8)
3.06.16.1
2.12.19.1
J
i
AS to SR
A6(Dl)
Turn Off Di sp
Eff Adr Tgr
A8
3.06.12.1
4.20.09.1
-+
Eff Addr
in
SR 21-35
FIGURE 6.1-7. DISPLAY EFFECTIVE ADDRESS
154

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