Texas Instruments TMS320C28x Reference Manual page 416

OR AX, loc16
SYNTAX OPTIONS
OR AX, loc16
Operands AX
loc16
Description
Flags and
N
Modes
Z
Repeat
Example
; OR the contents of VarA and VarB and store in VarC:
MOV
OR
MOV
1100 101A LLLL LLLL
Accumulator high (AH) or accumulator low (AL) register
Addressing mode (see Chapter 5)
Perform a bitwise OR operation on the specified AX register with the
contents of the location pointed to by the "loc16" addressing mode. The
result is stored in AX:
AX = AX OR [loc16];
The load to AX is tested for a negative condition. If bit 15 of AX is 1, then the
negative flag bit is set; otherwise it is cleared.
The load to AX is tested for a zero condition. The zero flag bit is set if the
operation generates AX = 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.
AL,@VarA
AL,@VarB
@VarC,AL
OPCODE
; Load AL with contents of VarA
; OR AL with contents of VarB
; Store result in VarC
OR AX, loc16
Bitwise OR
OBJMODE RPT CYC
X − 1
6-259