Freescale Semiconductor, Inc.
Instruction Set
Instruction Set Summary
Table 12-6. Instruction Set Summary (Sheet 2 of 6)
e
Effect on
s
e
Source
Form
CCR
r
Operation
Description
d
cod
d
M
H I N Z C
C
p
d
Ope
BIH rel
Branch if IRQ Pin High
PC ← (PC) + 2 + rel ? IRQ = 1 — — — — — REL
PC ← (PC) + 2 + rel ? IRQ = 0 — — — — — REL
2F rr
2E rr
3
3
BIL rel
Branch if IRQ Pin Low
ii
dd
hh ll
ee ff
ff
BIT #opr
BIT opr
BIT opr
BIT opr,X
BIT opr,X
BIT ,X
IMM
DIR
EXT
IX2
IX1
IX
A5
B5
C5
D5
E5
F5
2
3
4
5
4
3
Bit Test Accumulator with Memory Byte
(A) (M)
— —
—
BLO rel
BLS rel
BMC rel
BMI rel
BMS rel
BNE rel
BPL rel
BRA rel
Branch if Lower (Same as BCS)
Branch if Lower or Same
Branch if Interrupt Mask Clear
Branch if Minus
PC ← (PC) + 2 + rel ? C = 1
— — — — — REL
25 rr
23 rr
2C rr
2B rr
2D rr
26 rr
2A rr
20 rr
3
3
3
3
3
3
3
3
PC ← (PC) + 2 + rel ? C Z = 1 — — — — — REL
PC ← (PC) + 2 + rel ? I = 0
PC ← (PC) + 2 + rel ? N = 1
PC ← (PC) + 2 + rel ? I = 1
PC ← (PC) + 2 + rel ? Z = 0
PC ← (PC) + 2 + rel ? N = 0
PC ← (PC) + 2 + rel ? 1 = 1
— — — — — REL
— — — — — REL
— — — — — REL
— — — — — REL
— — — — — REL
— — — — — REL
Branch if Interrupt Mask Set
Branch if Not Equal
Branch if Plus
Branch Always
DIR (b0) 01 dd rr
DIR (b1) 03 dd rr
DIR (b2) 05 dd rr
DIR (b3) 07 dd rr
DIR (b4) 09 dd rr
DIR (b5) 0B dd rr
DIR (b6) 0D dd rr
DIR (b7) 0F dd rr
5
5
5
5
5
5
5
5
BRCLR n opr rel Branch if Bit n Clear
PC ← (PC) + 2 + rel ? Mn = 0 — — — —
BRN rel
Branch Never
PC ← (PC) + 2 + rel ? 1 = 0
— — — — — REL
21 rr
3
DIR (b0) 00 dd rr
DIR (b1) 02 dd rr
DIR (b2) 04 dd rr
DIR (b3) 06 dd rr
DIR (b4) 08 dd rr
DIR (b5) 0A dd rr
DIR (b6) 0C dd rr
DIR (b7) 0E dd rr
5
5
5
5
5
5
5
5
BRSET n opr rel Branch if Bit n Set
PC ← (PC) + 2 + rel ? Mn = 1 — — — —
DIR (b0) 10 dd
DIR (b1) 12 dd
DIR (b2) 14 dd
DIR (b3) 16 dd
DIR (b4) 18 dd
DIR (b5) 1A dd
DIR (b6) 1C dd
DIR (b7) 1E dd
5
5
5
5
5
5
5
5
BSET n opr
Set Bit n
Mn ← 1
— — — — —
PC ← (PC) + 2; push (PCL)
SP ← (SP) – 1; push (PCH)
SP ← (SP) – 1
BSR rel
Branch to Subroutine
— — — — — REL
AD rr
6
PC ← (PC) + rel
CLC
CLI
Clear Carry Bit
C ← 0
I ← 0
— — — — 0
— 0 — — —
INH
INH
98
9A
2
2
Clear Interrupt Mask
MC68HC705C8A — Rev. 3
MOTOROLA
Technical Data
Instruction Set
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