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97
MB90220 Series
Table 20 Branch 1 Instructions [31 Instructions]
For an explanation of “(a)”, “(c)” and “(d)”, refer to Table 4, “Number of Execution Cycles for Each Form of Addressing,”
and Table 5, “Correction Values for Number of Cycles Used to Calculate Number of Actual Cycles.”
*1: 3 when branching, 2 when not branching.
*2: 3
×
(c) + (b)
*3: Read (word) branch address.
*4: W: Save (word) to stack; R: Read (word) branch address.
*5: Save (word) to stack.
*6: W: Save (long word) to W stack; R: Read (long word) branch address.
*7: Save (long word) to stack.
Mnemonic
#
cycles
B
Operation
LH AH I
S
T
N
Z
V
C RMW
BZ/BEQ
BNZ/BNE
BC/BLO
BNC/BHS
BN
BP
BV
BNV
BT
BNT
BLT
BGE
BLE
BGT
BLS
BHI
BRA
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
rel
JMP
JMP
JMP
JMP
JMPP
JMPP
JMPP
@A
addr16
@ear
@eam
@ear *
3
@eam *
3
addr24
CALL
CALL
CALL
CALLV #vct4 *
5
CALLP @ear *
6
@ear *
4
@eam *
4
addr16 *
5
CALLP @eam *
6
CALLP addr24 *
7
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
3
2
2+
2
2+
4
2
2+
3
1
2
2+
4
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
2
2
3
4+ (a)
3
4+ (a)
3
4
5+ (a)
5
5
7
8+ (a)
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
(c)
0
(d)
0
(c)
2
×
(c)
(c)
2
×
(c)
2
×
(c)
*
2
2
×
(c)
Branch when (Z) = 1
Branch when (Z) = 0
Branch when (C) = 1
Branch when (C) = 0
Branch when (N) = 1
Branch when (N) = 0
Branch when (V) = 1
Branch when (V) = 0
Branch when (T) = 1
Branch when (T) = 0
Branch when (V) xor (N) = 1
Branch when (V) xor (N) = 0
( (V) xor (N) ) or (Z) = 1
( (V) xor (N) ) or (Z) = 0
Branch when (C) or (Z) = 1
Branch when (C) or (Z) = 0
Branch unconditionally
word (PC)
←
(A)
word (PC)
←
addr16
word (PC)
←
(ear)
word (PC)
←
(eam)
word (PC)
←
(ear), (PCB)
←
(ear +2)
word (PC)
←
(eam), (PCB)
←
(eam +2)
word (PC)
←
ad24 0 to 15
(PCB)
←
ad24 16 to 23
word (PC)
←
(ear)
word (PC)
←
(eam)
word (PC)
←
addr16
Vector call linstruction
word (PC)
←
(ear) 0 to 15,
(PCB)
←
(ear) 16 to 23
word (PC)
←
(eam) 0 to 15,
(PCB)
←
(eam) 16 to 23
word (PC)
←
addr 0 to 15,
(PCB)
←
addr 16 to 23
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