Texas Instruments TMS320C28x Reference Manual page 415

OR ACC,#16bit << #0..16
OR ACC,#16bit << #0..16
SYNTAX OPTIONS
OR ACC,#16bit << #0..15
OR ACC,#16bit << #16
Operands ACC
#16bit
#0..16
Description
Flags and N
Modes
Z
Repeat
Example
; Calculate the 32-bit value: VarA = VarA OR 0x08000000
MOVL
OR
MOVL
6-258
Accumulator register
16-bit immediate constant value
Shift value (default is "<< #0" if no value specified)
Perform a bitwise OR operation on the ACC register with the given 16-bit
unsigned constant value left shifted as specified. The value is zero extended
and lower order bits are zero filled before the OR operation. The result is
stored in the ACC register:
ACC = ACC OR (0:16bit << shift value);
The load to ACC is tested for a negative condition. If bit 31 of ACC is 1, then
the negative flag bit is set; otherwise it is cleared.
The load to ACC is tested for a zero condition. The zero flag bit is set if the
operation generates ACC = 0; otherwise it is cleared
This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
ACC,@VarA
ACC,#0x8000 << 12
@VarA,ACC
OPCODE
0011 1110 0001 SHFT
CCCC CCCC CCCC CCCC
0101 0110 0100 1010
CCCC CCCC CCCC CCCC
; Load ACC with contents of VarA
; OR ACC with 0x08000000
; Store result in VarA
Bitwise OR
OBJMODE RPT CYC
1 − 1
1 − 1