Freescale Semiconductor StarCore SC140 - Manual (Page 433)

CMPEQ.W
SC140 DSP Core Reference Manual A-119
CMPEQ.W
Compare for Equal (DALU)
CMPEQ.W
Description
Status and Conditions that Affect Instruction
None.
Status and Conditions Changed by Instruction
Example
cmpeq.w #$5,d3
Operation Assembler Syntax
If #u5 == Dn, then 1
→ T, else 0 → T
CMPEQ.W #u5,Dn {0
≤ u5 < 32}
If #s16 == Dn, then 1
→ T, else 0 → T
CMPEQ.W #s16,Dn {–2
15 ≤ s16 < 2 15
}
CMPEQ.W #u5,Dn
Compares an immediate unsigned 5-bit value (range 0–31) with a data register (Dn) for equality. The
immediate value is right-aligned and zero-extended.
CMPEQ.W #s16,Dn
Compares an immediate signed 16-bit value that has been right-aligned and sign-extended to 40 bits with a
data register (Dn) for equality.
Register Address Bit Name Description
SR[1] T Sets T bit if equal, otherwise cleared.
Register/Memory Address Before After
immediate $0000 0005
D3 $00 0000 0005
SR $00E4 0000 $00E4 0002