Texas Instruments TMS320C28x Reference Manual page 336

MOV PM, AX
SYNTAX OPTIONS
MOV PM, AX
Operands AX
Description
Flags and
PM
Modes
Repeat
Example
; Calculate: Y32 = (M16*X16 >> Shift) + B32, Shift = 0 to 6
CLRC
MOV AL,@Shift
ADDB
MOV PM,AX
MOV T,@X16
MPY P,XT,@M16
MOVL
ADDL
MOVL
Accumulator high (AH) or accumulator low (AL) registers.
Load the product shift mode (PM) bits with the 3 least significant bits of
register AX.
PM = AX(2:0);
The product shift mode bits are loaded with the 3 least significant bits of
AX.
This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
AMODE ; Make sure AMODE = 0
; Load AL with contents of "Shift"
AL,#1 ; Convert "Shift" to PM encoding
; Load PM bits with encoded "Shift" value
; T
; P
ACC,@B32 ; ACC = B32
ACC,P << PM ; ACC = ACC + (P >> Shift)
@Y32,ACC ; Store result into Y32
OPCODE
0101 0110 0011 100A
= X16
= X16*M16
MOV PM, AX
Load Product Shift Mode
OBJMODE RPT CYC
1 −
6-179
1