Texas Instruments TMS320C28x Reference Manual page 318

MOV AX, loc16
SYNTAX OPTIONS
MOV AX, loc16
Operands AX
loc16
Description
Flags and N
Modes
Z
Repeat
Example
MOV AH, *+XAR0[0]
SB NotZero,NEQ
1001 001A LLLL LLLL
Accumulator high (AH) or accumulator low (AL) register
Addressing mode (see Chapter 5)
Load accumulator high register (AH) or accumulator low register (AL)
register with the 16-bit contents of the location pointed to by the "loc16"
addressing mode, leaving the other half of the accumulator register
unchanged:
AX = [loc16];
The load to AX is tested for a negative condition. If bit 15 of AX is 1, then
this flag is set; otherwise it is cleared.
The load to AX is tested for a zero condition. The bit is set if the operation
results in 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.
OPCODE
; Load AH with the 16-bit contents
; of location pointed to by XAR0.
; AL is unchanged.
; Branch if contents of AH were non
; zero.
MOV AX, loc16
Load AX
OBJMODE RPT CYC
X − 1
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