DR805x Instructions set details
-9-
2.2.4. D
ATA TRANSFERS
Mnemonic
MOV A,Rn
MOV A,direct
MOV A,@Ri
MOV A,#data
MOV Rn,A
MOV Rn,direct
MOV Rn,#data
MOV direct,A
MOV direct,Rn
MOV direct1,direct2
MOV direct,@Ri
MOV direct,#data
MOV @Ri,A
MOV @Ri,direct
MOV @Ri,#data
MOV DPTR,#data16
MOVC A,@A+DPTR
MOVC A,@A+PC
MOVX A,@Ri
MOVX A,@DPTR
MOVX @Ri,A
MOVX @DPTR,A
PUSH direct
POP direct
XCH A,Rn
XCH A,direct
XCH A,@Ri
XCHD A,@Ri
Description
Move register to accumulator
Move direct byte to accumulator
Move indirect RAM to accumulator
Move immediate data to accumulator
Move accumulator to register
Move direct byte to register
Move immediate data to register
Move accumulator to direct
Move register to direct
Move direct byte to direct
Move indirect RAM to direct
SFR byte
RAM byte
SFR byte
RAM byte
SFR byte
RAM byte
SFR byte
RAM byte
Code
0xE8-0xEF
0xE5
0xE6-0xE7
0x74
0xF8-0xFF
0xA8-0xAF
0x78-0x7F
0xF5
0x88-8F
85
86-87
75
F6-F7
A6-A7
76-77
90
93
83
E2-E3
E0
F2-F3
F0
C0
D0
C8-CF
C5
C6-C7
D6-D7
Bytes Cycles
1
2
1
2
1
2
2
2
2
3
2
3
1
2
2
3
1
1
1
1
1
1
2
2
1
2
1
1
1
2
2
2
2
4
2
2
3
2
3
3
4
3
4
3
3
4
3
3
4
4
3
*
2
*
4
*
3
*
4
2
3
2
3
3
3
Move immediate data to direct byte
Move accumulator to indirect RAM
Move direct byte to indirect RAM
Move immediate data to indirect RAM
Load data pointer with a 16-bit constant
Move code byte relative to DPTR to accumulator
Move code byte relative to PC to accumulator
Move external RAM (8-bit address) to A
Move external RAM (16-bit address) to A
Move A to external RAM (8-bit address)
Move A to external RAM (16-bit address)
Push direct byte onto stack
SFR
Pop direct byte from stack to
RAM
Exchange register with accumulator
Exchange direct byte with accumulator
Exchange indirect RAM with accumulator
Exchange low-order nibble indirect RAM with A
Table 6. Data transfer
* MOVX cycles depends on STRETCH register
All trademarks mentioned in this document
are trademarks of their respective owners.
http://www.DigitalCoreDesign.com
http://www.dcd.pl
Copyright 1999-2003 DCD – Digital Core Design. All Rights Reserved.
DCD [ DIGITAL CORE DESIGN ]
