Instruction Set Description
265
SLAU367P – October 2012 – Revised April 2020
Copyright © 2012–2020, Texas Instruments Incorporated
CPUX
4.6.4.8
MOVA
MOVA
Move the 20-bit source to the 20-bit destination
Syntax
MOVA Rsrc,Rdst
MOVA #imm20,Rdst
MOVA z16(Rsrc),Rdst
MOVA EDE,Rdst
MOVA &abs20,Rdst
MOVA @Rsrc,Rdst
MOVA @Rsrc+,Rdst
MOVA Rsrc,z16(Rdst)
MOVA Rsrc,&abs20
Operation
src
→
Rdst
Rsrc
→
dst
Description
The 20-bit source operand is moved to the 20-bit destination. The source operand is not
affected. The previous content of the destination is lost.
Status Bits
N:
Not affected
Z:
Not affected
C:
Not affected
V:
Not affected
Mode Bits
OSCOFF, CPUOFF, and GIE are not affected.
Examples
Copy 20-bit value in R9 to R8
MOVA
R9,R8
; R9 -> R8
Write 20-bit immediate value 12345h to R12
MOVA
#12345h,R12
; 12345h -> R12
Copy 20-bit value addressed by (R9 + 100h) to R8. Source operand in addresses (R9 +
100h) LSBs and (R9 + 102h) MSBs.
MOVA
100h(R9),R8
; Index: + 32 K. 2 words transferred
Move 20-bit value in 20-bit absolute addresses EDE (LSBs) and EDE+2 (MSBs) to R12
MOVA
&EDE,R12
; &EDE -> R12. 2 words transferred
Move 20-bit value in 20-bit addresses EDE (LSBs) and EDE+2 (MSBs) to R12. PC
index ± 32 K.
MOVA
EDE,R12
; EDE -> R12. 2 words transferred
Copy 20-bit value R9 points to (20 bit address) to R8. Source operand in addresses
@R9 LSBs and @(R9 + 2) MSBs.
MOVA
@R9,R8
; @R9 -> R8. 2 words transferred