Texas Instruments TMS320C28x Reference Manual page 419

OR loc16,#16bit
OR loc16,#16bit
SYNTAX OPTIONS
OR loc16,#16bit
Operands loc16
#16bit
Description
Flags and
N
Modes
Z
Repeat
Example
; Set Bits 4 and 7 of VarA:
; VarA = VarA OR #(1 << 4 | 1 << 7)
OR
6-262
Addressing mode (see Chapter 5)
16-bit immediate constant value
Perform a bitwise OR operation on the content of the location pointed to by
the "loc16" addressing mode and the 16-bit immediate constant value. The
result is stored in the location pointed to by "loc16":
[loc16] = [loc16] OR 16bit;
Smart Encoding:
If loc16 = AH or AL and #16bit is an 8-bit number, then the assembler will
encode this instruction as ORB AX, #8bit to improve efficiency. To override
this encoding, use the ORW AX, #16bit instruction alias.
After the operation if bit 15 of [loc16] 1, set N; otherwise, clear N.
After the operation if [loc16] is zero, set Z; otherwise, clear Z.
This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
@VarA,#(1 << 4 | 1 << 7)
OPCODE
0001 1010 LLLL LLLL
CCCC CCCC CCCC CCCC
; Set bits 4 and 7 of VarA
Bitwise OR
OBJMODE RPT CYC
X − 1