Tstgea.l, Test for greater than or equal, Operation assembler syntax – Freescale Semiconductor StarCore SC140 User Manual
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SC140 DSP Core Reference Manual
TSTGEA.L
TSTGEA.L
Test for Greater Than or Equal
TSTGEA.L
to Zero (AGU)
Description
Status and Conditions that Affect Instruction
Status and Conditions Changed by Instruction
Example
tstgea.l r7
Operation
Assembler Syntax
If Rx
≥ 0, then 1 → T, else 0 → T
TSTGEA.L Rx
TESTGEA.L Rx
Sets the T bit if the source AGU register (Rx) is greater than or equal to zero; otherwise, it clears the T bit.
The value in Rx is treated as a signed number.
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
Set if the source operand is greater than or equal to zero and cleared if
the source operand is not greater than or equal to zero.
Register/Memory Address
Before
After
R7
$57E3 A6CC
SR
$00E4 0000
$00E4 0002