Table 1-3 Instructions Classified by Function (cont)
Type
Instruction
Size
*
Function
Branching
Bcc
—
Branches to a specified address if a specified condition
instructions
is true. The branching conditions are listed below.
Mnemonic
Description
Condition
BRA(BT)
Always (true)
Always
BRN(BF)
Never (false)
Never
BHI
High
C
∨
Z = 0
BLS
Low or same
C
∨
Z = 1
Bcc(BHS)
Carry clear
C = 0
(high or same)
BCS(BLO)
Carry set (low)
C = 1
BNE
Not equal
Z = 0
BEQ
Equal
Z = 1
BVC
Overflow clear
V = 0
BVS
Overflow set
V = 1
BPL
Plus
N = 0
BMI
Minus
N = 1
BGE
Greater or equal
N
⊕
V = 0
BLT
Less than
N
⊕
V = 1
BGT
Greater than
Z
∨
(N
⊕
V) = 0
BLE
Less or equal
Z
∨
(N
⊕
V) = 1
JMP
—
Branches unconditionally to a specified address.
BSR
—
Branches to a subroutine at a specified address.
JSR
—
Branches to a subroutine at a specified address.
RTS
—
Returns from a subroutine.
Note:
*
Size refers to the operand size.
24