List of Abbreviations and Symbols
AC
AI
ALT
ALU
ANSNZ
AP
ASCII
C
CAnn ---+-W
CCROS
CP
F
FA
FB
FI
FT
FWX
GA
GB
GEOG
GMWM
GR
GS
GT
GUV
H
HEX
HZ
INTR
JE
JI
] K
I LOAD
I
LS
I
LZ
1\
MC
1\
MILS
1\
MPX
1\
MS
}.; NP
o
OPI
Address Carry (ALU Carry)
Address In
(1/0
Address)
Alternate
Arithmetic and Logic Unit
Answer Nonzero
Address Parity (ROS Address)
American Standard Code for Information Interchange
Counter for Interval Timer
Gate CA Field to W Register
Card Capacitor Read Only Storage
Control Register Parity
External Interrupt Register
Multiplex Channel Tags Out
Multiplex Channel Tags Out
Multiplex Channel Tags In
Multiplex Channel Tags In
Multiplex Channel Backup RosaI'
Selector Channel Tags Out
Selector Channel Tags Out
Geographic Address in CCROS
Group Mark-Word Mark
Selector Channel Data Register
Selector Channel Tags In
Selector. Channel Tags In
Selector Channel Address Register
Holding Register (Priority)
Hex-a-Decimal
High Z Buss Zero
Interrupt
Direct Data Channel Buss Out
Direct Data Channel Buss In
Constant Generator
Reset
Local Storage
Low Z Buss Zero
Machine Check
Main Storage or Local Storage
Multiplex
Main Storage
Next Address Parity
Operational in
(1/0)
IBM Confident;'l
37

p
Q
ROS
ROSAR
RVDD
SAB
SAL
SCD
SFG
SP
STI
STOP
STORE
SVI
rA
ffE
1'1
TREQ
TT
V67
=
0
WRITE
Z
1BC
+2
±3
n
¥
38
IBM COIl/idmtiai
Priority Register
l\Iemory Protect Register
Read Only Storage
Read Only Storage Address Register
R Register is a Valid Decimal Digit
Switches A and B (Console)
Sense Amplifier Latch
Switches C and D (Console)
Switches F and G (Console)
Sense Amplifier Latches Parity
Status In (I/O)
Stop
Write, But Don't Set R Register (Clear)
Service In (I/O)
1050 Tags Out
1050 Buss Out
1050 Buss In
10!)0 Request
1050 Tags In
V Register 6 and 7 Bits Equal Zero
Write and Set R Register
Z
Buss
1 Bit Carry
Binary Add Under True/Complement Control
Decimal Add Under True/Complement Control
AND
OR
Exclusive OR
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