CENTRAL PROCESSING UNIT
M68HC16 Z SERIES
4-30
USER’S MANUAL
Table 4-3 Instruction Set Abbreviations and Symbols
A — Accumulator A
X — Register used in operation
AM — Accumulator M
M — Address of one memory byte
B — Accumulator B
M
+
1 — Address of byte at M + $0001
CCR — Condition code register
M
:
M
+
1 — Address of one memory word
D — Accumulator D
(
…
)X — Contents of address pointed to by IX
E — Accumulator E
(
...
)Y — Contents of address pointed to by IY
EK — Extended addressing extension field
(
...
)Z — Contents of address pointed to by IZ
IR — MAC multiplicand register
E, X — IX with E offset
HR — MAC multiplier register
E, Y — IY with E offset
IX — Index register X
E, Z — IZ with E offset
IY — Index register Y
EXT — Extended
IZ — Index register Z
EXT20 — 20-bit extended
K — Address extension register
IMM8 — 8-bit immediate
PC — Program counter
IMM16 — 16-bit immediate
PK — Program counter extension field
IND8, X — IX with unsigned 8-bit offset
SK — Stack pointer extension field
IND8, Y — IY with unsigned 8-bit offset
SL — Multiply and accumulate sign latch
IND8, Z — IZ with unsigned 8-bit offset
SP — Stack pointer
IND16, X — IX with signed 16-bit offset
XK — Index register X extension field
IND16, Y — IY with signed 16-bit offset
YK — Index register Y extension field
IND16, Z — IZ with signed 16-bit offset
ZK — Index register Z extension field
IND20, X — IX with signed 20-bit offset
XMSK — Modulo addressing index register X mask
IND20, Y — IY with signed 20-bit offset
YMSK — Modulo addressing index register Y mask
IND20, Z — IZ with signed 20-bit offset
S — Stop disable control bit
INH — Inherent
MV — AM overflow indicator
IXP — Post-modified indexed
H — Half carry indicator
REL8 — 8-bit relative
EV — AM extended overflow indicator
REL16 — 16-bit relative
N — Negative indicator
b — 4-bit address extension
Z — Zero indicator
ff — 8-bit unsigned offset
V — Two’s complement overflow indicator
gggg — 16-bit signed offset
C — Carry/borrow indicator
hh — High byte of 16-bit extended address
IP — Interrupt priority field
ii — 8-bit immediate data
SM — Saturation mode control bit
jj — High byte of 16-bit immediate data
PK — Program counter extension field
kk — Low byte of 16-bit immediate data
— — Bit not affected
ll — Low byte of 16-bit extended address
∆
— Bit changes as specified
mm — 8-bit mask
0 — Bit cleared
mmmm — 16-bit mask
1 — Bit set
rr — 8-bit unsigned relative offset
M — Memory location used in operation
rrrr — 16-bit signed relative offset
R — Result of operation
xo — MAC index register X offset
S — Source data
yo — MAC index register Y offset
z — 4-bit zero extension
+
— Addition
•
— AND
−
— Subtraction or negation (two’s complement)
✛
— Inclusive OR (OR)
∗
— Multiplication
⊕
— Exclusive OR (EOR)
/
— Division
NOT — Complementation
>
— Greater
:
— Concatenation
<
— Less
⇒
— Transferred
=
— Equal
⇔
— Exchanged
≥
— Equal or greater
±
— Sign bit; also used to show tolerance
≤
— Equal or less
« — Sign extension
≠
— Not equal
%
— Binary value
$ — Hexadecimal value
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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