MOV T, loc16
6-180
MOV T, loc16 Load the Upper Half of the XT Register
SYNTAX OPTIONS OPCODE OBJMODE RPT CYC
MOV T, loc16 0010 1101 LLLL LLLL X − 1
Operands T Upper 16 bits of the multiplicand register (XT)
loc16 Addressing mode (see Chapter 5)
Description Load the T register with the 16-bit contents of the location pointed to by the
“loc16” addressing mode:
T = [loc16];
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 16-bit multiply:
; Y = (X0*C0) >> 2) + (X1*C1 >> 2) + (X2*C2 >> 2)
; X2 = X1
; X1 = X0
SPM −2 ; Set product shift to >> 2
MOV T,@X2 ; T = X2
MPY P,T,@C2 ; P = T*C2
MOVP T,@X1 ; T = X1, ACC = X2*C2 >> 2
MPY P,T,@C1 ; P = T*C1
MOV @X2,T ; X2 = X1
MOVA T,@X0 ; T = X0, ACC = X1*C1 >> 2 + X2*C2 >> 2
MPY P,T,@C0 ; P = T*C0
MOV @X1,T ; X1 = X0
ADDL ACC,P << PM ; ACC = X0*C0 >> 2 + X1*C1 >> 2 + X2*C2 >> 2
MOVL @Y,ACC ; Store result into Y
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