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The following branch instructions test to determine whether a particular internal condition is true
o r false. If the condition tested i s true, the computer executes the next sequential instruction; if
false, the second sequential instruction i s executed.
Mnemonic
Operand
Index
Time
Oper. Code
Address
Word
Microsec.
-
Description
BPL
12
BRANCH ON PLUS. Register A tested for plus sign.
BMI
12
BRANCH ON MINUS. Register A testedfor minus sign.
BZE
12
BRANCH ON ZERO. Register A tested for all zeros.
BNZ
BOV
BNO
12
BRANCH ON NON-ZERO. Register A testedfor not all
zeros.
12
BRANCH ON OVERFLOW. Overflow indicator tested
for ON.
12
BRANCH ON NO OVERFLOW.
Overflow indicator
tested for OFF.
BOD
12
BRANCH ON ODD.
Register A tested for odd value.
BEV
12
BRANCH ON EVEN. Register A testedfor even value.
BPE
BPC
12
BRANCH ON PARITY ERROR. Parity e r r o r indicator
tested for ON.
12
BRANCH ON PARITY CORRECT. Parity e r r o r indi-
cator tested for OFF.
CAB
Y
X
12-24
COMPARE AND BRANCH. Register A compared alge-
(Optional feature)
braically with contents of Y.
If contents of Y a r e
greater, the next instruction i s executed; if contents of
Y and A a r e equal, the second sequential instruction i s
executed; if contents of Y a r e less, the third sequential
instruction i s executed.
DCB
Y
(Optional feature)
X
12-24
DOUBLE COMPARE AND BRANCH. Registers A and
Q together a r e compared algebraically with contents of
Y and Y+1. Branching occurs in an analogous manner
to the CAB instruction above.
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