Bitclr - Analog Devices ADSP-BF53x Blackfin Reference

Instruction Overview

BITCLR

General Form
BITCLR ( register, bit_position )
Syntax
BITCLR ( Dreg , uimm5 ) ;
Syntax Terminology
:
Dreg R7–0
: 5-bit unsigned field, with a range of 0 through 31
uimm5
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Bit Clear instruction clears the bit designated by
specified D-register. It does not affect other bits in that register.
The
bit_position
LSB, and 31 indicates the MSB of the 32-bit D-register.
Flags Affected
The Bit Clear instruction affects flags as follows.
• is set if result is zero; cleared if nonzero.
AZ
• is set if result is negative; cleared if non-negative.
AN
• is cleared.
AC0
13-2 ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* (a) */
range of values is 0 through 31, where 0 indicates the
in the
bit_position