Motorola HC12 Refrence Manual page 345

Table A-1 Instruction Set Summary (Continued)
Source
Form
(M) – $01 ⇒ M
DEC opr
Decrement Memory Location
(A) – $01 ⇒ A
DECA
(B) – $01 ⇒ B
DECB
(SP) – $0001 ⇒ SP
DES
Translates to LEAS –1,SP
(X) – $0001 ⇒ X
DEX
Decrement Index Register X
(Y) – $0001 ⇒ Y
DEY
Decrement Index Register Y
(Y:D) ÷ (X) ⇒ Y Remainder ⇒ D
EDIV
32 × 16 Bit ⇒ 16 Bit Divide (unsigned)
(Y:D) ÷ (X) ⇒ Y Remainder ⇒ D
EDIVS
32 × 16 Bit ⇒ 16 Bit Divide (signed)
EMACS sum (M :M
(X) (X+1)
M~M+3
16 × 16 Bit ⇒ 32 Bit
Multiply and Accumulate (signed)
MAX((D), (M:M+1)) ⇒ D
EMAXD opr
MAX of 2 Unsigned 16-Bit Values
N, Z, V and C status bits reflect result of
internal compare ((D) – (M:M+1))
MAX((D), (M:M+1)) ⇒ M:M+1
EMAXM opr
MAX of 2 Unsigned 16-Bit Values
N, Z, V and C status bits reflect result of
internal compare ((D) – (M:M+1))
MIN((D), (M:M+1)) ⇒ D
EMIND opr
MIN of 2 Unsigned 16-Bit Values
N, Z, V and C status bits reflect result of
internal compare ((D) – (M:M+1))
MIN((D), (M:M+1)) ⇒ M:M+1
EMINM opr
MIN of 2 Unsigned 16-Bit Values
N, Z, V and C status bits reflect result of
internal compare ((D) – (M:M+1))
(D) × (Y) ⇒ Y:D
EMUL
16 × 16 Bit Multiply (unsigned)
(D) × (Y) ⇒ Y:D
EMULS
16 × 16 Bit Multiply (signed)
CPU12
REFERENCE MANUAL
Operation
Decrement A
Decrement B
) × (M ) + (M~M+3) ⇒
:M
(Y) (Y+1)
INSTRUCTION REFERENCE
Addr. Machine
Mode Coding (hex)
EXT 73 hh ll
IDX 63 xb
IDX1 63 xb ff
IDX2 63 xb ee ff
[D,IDX] 63 xb
[IDX2] 63 xb ee ff
INH 43
INH 53
IDX 1B 9F
INH 09
INH 03
INH 11
INH 18 14
Special 18 12 hh ll
IDX 18 1A xb
IDX1 18 1A xb ff
IDX2 18 1A xb ee ff
[D,IDX] 18 1A xb
[IDX2] 18 1A xb ee ff
IDX 18 1E xb
IDX1 18 1E xb ff
IDX2 18 1E xb ee ff
[D,IDX] 18 1E xb
[IDX2] 18 1E xb ee ff
IDX 18 1B xb
IDX1 18 1B xb ff
IDX2 18 1B xb ee ff
[D,IDX] 18 1B xb
[IDX2] 18 1B xb ee ff
IDX 18 1F xb
IDX1 18 1F xb ff
IDX2 18 1F xb ee ff
[D,IDX] 18 1F xb
[IDX2] 18 1F xb ee ff
INH 13
INH 18 13
*
~
S X H I N Z V C
– – ∆ ∆ ∆
4 – –
3
4
5
6
6
1
1
2 – – – – – – –
∆
1 – – – – – –
∆
1 – – – – – –
– – ∆ ∆ ∆
11 – –
– – ∆ ∆ ∆
12 – –
– – ∆ ∆ ∆
13 – –
– – ∆ ∆ ∆
4 – –
4
5
7
7
– – ∆ ∆ ∆
4 – –
5
6
7
7
– – ∆ ∆ ∆
4 – –
4
5
7
7
– – ∆ ∆ ∆
4 – –
5
6
7
7
– – ∆ ∆
3 – – –
– – ∆ ∆
3 – – –
MOTOROLA
–
–
–
–
∆
∆
∆
∆
∆
∆
∆
∆
∆
A-7