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DESCRIPTION OF INSTRUCTIONS
331
72. MOVX @DPTR, A
(Move accumulator to external memory addressed by data pointer)
11110000
70
Instruction code
Operation
Number of bytes
Number of cycles
Flags
(PSW)
Description
Example MOVX @DPTR, A
Instruction code
: Byte 1
((DPTR))←(A):
C AC F0 RS1 RS0 OV F1 P
:
:
:
The accumulator contents are stored in external data memory
(RAM) addressed by the data pointer contents.
:
1
2
11110000
70
Byte 1
Before execution After execution
:
DPH
15 8
0110001011001100
70
DPH
15 8
0110001011001100
70
62CCH
10111000
70
62CCH
00000101
70
Accumulator
00000101
70
Accumulator
00000101
70
DPL DPL