Cmphia, Unsigned compare for higher (agu), Operation assembler syntax – Freescale Semiconductor StarCore SC140 User Manual
Page 445
CMPHIA
SC140 DSP Core Reference Manual
A-131
CMPHIA
Unsigned Compare for Higher (AGU)
CMPHIA
Description
Status and Conditions that Affect Instruction
Status and Conditions Changed By Instruction
Example
cmphia r0,r1
Operation
Assembler Syntax
Rx > rx
→ T
CMPHIA rx,Rx
CMPHIA rx,Rx
Compares the unsigned value in two AGU registers (rx and Rx) to determine which is greater. It sets the T
bit if the unsigned value of Rx is greater than the unsigned value of rx. It clears the T bit if the unsigned
value of Rx is not greater than the unsigned value of rx. Note that a register cannot be compared to itself
using this instruction.
Register Address
Bit Name
Description
SR[18]
EXP
Determines which stack pointer is used when the stack pointer is an
operand. Otherwise, the instruction is not affected by SR.
Register Address
Bit Name
Description
SR[1]
T
Sets the T bit if unsigned Rx > rx, otherwise cleared.
Register/Memory Address
Before
After
R0
$FFFF 8002
R1
$FFFF FFFF
SR
$00E4 0000
$00E4 0002