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INSTRUCTION SET
ADDC A,@R
r
Add Carry and Data Memory Contents to Accumulator
101111
0
0
0r
i
The content
of
the carry bit is added
to
accumulator
location
0 and the carry bit
c;:leared.
Then the contents
of
the resident data memory location aqdressed by
register
Or'
bits 0-5*are added
to
the accumulator.
Carry is affected.
r=0-1
;MOVE '40' DEC TO
REG
1
(A)
...
(A)+«Rr))+(C)
Example: ADDMC: MOV R1,#40
AD
DC
A,@R1
;ADD CARRY AND LOCATION 40
;CONTENTS TO ACC
AD DC A,#data Add Carry and Immediate Data
to
Accumulator
I 0 0 0 1 I 0 0 1 1 I I
d7
de d5 d4 I d3 d2
d1
do I
This is a 2-cycle instruction. The content of the
carry bit is added to
accumulator location 0 and
the carry bit
cleared. Then the specified data is
addec;l
to
the accumulator. Carry is affected.
(A)--
(A)+data+(C)
Example:
ADDC
A,#225 ;ADD CARRY AND '225' DEC
;TO ACC
ANL A,R
r
Logical AND Accumulator With Register Mask
1010111rrri
Data in the accumulator is logically ANDed with the
mask contained in working register
or'.
(A)
--
(A) AND (Rr) r=0-7
Example: ANDREG: ANL A,R3 ;'AND' ACC CONTENTS WITH MASK
;IN
REG
3
ANL A,@R
r
Logical AND Accumulator With Memory Mask
101011
000r
i
Data in the accumulator is logically ANDed with the
mask contained in the data memory
location referenced
by register
or',
bits
0-5~
(A)--
(A) AND «Rr)) r=0-1
Example: ANDDM: MOV
RO,#03FH
;MOVE '3F' HEX TO
REG
0
ANL
A,
@RO
;'AND' ACC CONTENTS WITH
;MASK IN LOCATION
63
Mnemonics copyright Intel Corporation
1976.
.
'0-6
for
8039/8049
4-10