Motorola CPU32 Reference Manual page 93

III
Bee
Operation:
Assembler
Syntax:
Attributes:
Branch Conditionally
Bee
If (condition true) then PC+ d
=>
PC
Bec (label)
Size
=
(Byte, Word, Long)
Description: If the specified condition is true, program execution continues at location (PC) +
displacement. The PC contains the address of the instruction word of the Bcc instruction plus
two. The displacement is a twos complement integer that represents the relative distance in bytes
from the current PC to the destination PC. If the 8-bit displacement field in the instruction word is
zero, a 16-bit displacement (the word immediately following the instruction) is used. If the 8-bit
displacement field in the instruction word is all ones ($FF), the 32-bit displacement (long word
immediately following the instruction) is used. Condition codes are specified as follows:
cc Name Code
Description cc Name Code Description
CC
Carry Clear 0100 C LS Low or Same 0011 C+Z
CS Carry Set
0101
C
LT Less Than 1101
N.V+N.V
EQ Equal 0111 Z MI
Minus 1011
N
GE
Greater or Equal 1100
N.V+N·V
NE Not Equal 0110 Z
GT Greater Than 1110
N.V.Z+N.V.Z PL
Plus 1010
N
HI
High 0010
C.Z
VC Overflow Clear 1000 V
LE Less or Equal 1111
Z+N.V+N.V
VS
Overflow Set
1001 V
Condition Codes:
Not affected.
Instruction Format:
15 14 13 12 11 10
9
8
7
6 5 4 3 2 0
o
I
1
I
1
I
o
I
CONDITION
I
8-BIT DISPLACEMENT
MOTOROLA
4-40
16-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT
=
$00
32-BIT DISPLACEMENT IF 8-BIT DISPLACEMENT
=
$FF
INSTRUCTION SET
CPU32 REFERENCE MANUAL