Texas Instruments TMS320C28x Reference Manual page 346

MOVB AX, #8bit
SYNTAX OPTIONS
MOVB AX, #8bit
Operands AX
#8bit
Description
Flags and N
Modes
Z
Repeat
Example
MOVB AL, #0xF0
CMP AL,*+XAR0[0]
SB Dest,EQ
1001 101A CCCC CCCC
Accumulator high (AH) or accumulator low (AL) register
8-bit immediate constant value
Load accumulator high register (AH) or accumulator low register (AL) with an
unsigned 8-bit constant zero extended, leaving the other half of the
accumulator register unchanged:
AX = 0:8bit;
Flag always set to zero.
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.
Load AX With 8-bit Constant
OPCODE
; Load AL with the value 0x00F0.
; Compare contents pointed to by XAR0
; with AL.
; Branch if values are equal.
MOVB AX, #8bit
OBJMODE RPT CYC
X − 1
6-189