Texas Instruments TMS320C28x User Manual

MOVL XT,loc32
6-216
MOVL XT,loc32 Load the XT Register
SYNTAX OPTIONS OPCODE OBJMODE RPT CYC
MOVL XT, loc32 1000 0111 LLLL LLLL 1 − 1
Operands T Upper 16 bits of the multiplicand register (XT)
loc32 Addressing mode (see Chapter 5)
Description Load the XT register with the 32-bit content of the location pointed to by the
“loc32” addressing mode:
XT = [loc32];
Flags and
Modes
None
Repeat This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
Example
; Calculate using 32-bit multiply, retaining high result:
; Y = (X0*C0) >> 2) + (X1*C1 >> 2) + (X2*C2 >> 2)
; X2 = X1
; X1 = X0
SPM −2 ; Set product shift to >> 2
ZAPA ; Zero ACC, P, OVC
MOVL XT,@X2 ; XT = X2
QMPYL P,XT,@C2 ; P = XT*C2
MOVL XT,@X1 ; XT = X1, ACC = X2*C2 >> 2
QMPYAL P,XT,@C1 ; P = XT*C1
MOVL @X2,XT ; X2 = X1
MOVL XT,@X0 ; XT = X0, ACC = X1*C1 >> 2 + X2*C2 >> 2
QMPYAL P,XT,@C0 ; P = XT*C0
MOVL @X1,XT ; X1 = X0
ADDL ACC,P << PM ; ACC = X0*C0 >> 2 + X1*C1 >> 2 + X2*C2 >> 2
MOVL @Y,ACC ; Store result into Y

Texas Instruments TMS320C28x Specifications

General

Brand	Texas Instruments
Model	TMS320C28x
Category	Processor
Language	English