Cmphi, Unsigned compare for higher (dalu), Instruction formats and opcodes – Freescale Semiconductor StarCore SC140 User Manual
Page 443: Instruction fields, Operation assembler syntax
CMPHI
SC140 DSP Core Reference Manual
A-129
CMPHI
Unsigned Compare for Higher (DALU)
CMPHI
Description
Status and Conditions that Affect Instruction
None.
Status and Conditions Changed by Instruction
Example
cmphi d1,d0
Instruction Formats and Opcodes
Note:
** indicates serial grouping encoding.
Instruction Fields
Da JJJ
Single
Source Data Register
Operation
Assembler Syntax
Dn > Da
→ T
CMPHI Da,Dn
CMPHI Da,Dn
Compares the unsigned value in bits 31:0 of two data registers (Da and Dn) to determine which is greater.
It sets the T bit if the unsigned value of Dn[31:0] is greater than the unsigned value of Da[31:0]. Otherwise,
it clears the T bit.
Register Address
Bit Name
Description
SR[1]
T
Sets the T bit if 32-bit unsigned Dn > Da, otherwise cleared.
Register/Memory Address
Before
After
D1
$00 26A2 44F3
D0
$00 2781 21A2
SR
$00E4 0000
$00E4 0002
Instruction
Words Cycles Type
Opcode
15
8
7
0
CMPHI Da,Dn
1
1
1
0
*
1
1
0
0
F
F
F
1
1
1
1
J
J
J
000
D0
010
D2
100
D4
110
D6
001
D1
011
D3
101
D5
111
D7
Note:
This instruction can specify D8-D15 as operands by using a prefix.