User's Manual

MSM80C154S/83C154S/85C154HVS
332
73. MOVX @Rr, A
(Move accumulator to external memory addressed by register)
1111001r
70
Instruction code
Operation
Number of bytes
Number of cycles
Flags
(PSW)
Description
Example MOVX @R0, A
Instruction code
: Byte 1
((Rr))←(A) r=0 or 1:
C AC F0 RS1 RS0 OV F1 P
:
:
:
The accumulator contents are stored in external data memory
addressed by the register r contents.
:
1
2
11110010
70
Byte 1
Before execution After execution
:
10100000
70
10100000
70
0A0H
00110011
70
0A0H
10111101
70
Accumulator
10111101
70
Accumulator
10111101
70
Register 0 Register 0