參數(shù)資料
型號: S1C621A0F0A0100
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 65/161頁
文件大?。?/td> 1037K
代理商: S1C621A0F0A0100
158
32000D–04/2011
AVR32
CP.W – Compare Word
Architecture revision:
Architecture revision1 and higher.
Description
Performs a compare between the two operands specified. The operation is implemented by
doing a subtraction without writeback of the difference. The operation sets the status flags
according to the result of the subtraction, but does not affect the operand registers.
Operation:
I.
Rd - Rs;
II.
Rd - SE(imm6);
III.
Rd - SE(imm21);
Syntax:
I.
cp.w
Rd, Rs
II.
cp.w
Rd, imm
III.
cp.w
Rd, imm
Operands:
I.
{d, s}
∈ {0, 1, …, 15}
II.
d
∈ {0, 1, …, 15}
imm
∈ {-32, -31, ..., 31}
III.
d
∈ {0, 1, …, 15}
imm
∈ {-1048576, -104875, ..., 1048575}
Status Flags:
Format I: OP1 = Rd, OP2 = Rs
Format II: OP1 = Rd, OP2 = SE(imm6)
Format III:OP1 = Rd, OP2 = SE(imm21)
Q:
Not affected
V:
V
← (OP1[31] ∧ OP2[31] ∧ RES[31]) ∨ (OP1[31] ∧ OP2[31] ∧ RES[31])
N:
N
← RES[31]
Z:
Z
← (RES[31:0] == 0)
C:
C
← OP1[31] ∧ OP2[31] ∨ OP2[31] ∧ RES[31] ∨ OP1[31] ∧ RES[31]
Opcode
Format I:
Format II:
000
Rs
00011
Rd
15
13
12
9
8
4
3
0
010110
imm6
Rd
15
13
12
10
9
4
3
0
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