Reset Carry Flag; Reset Decimal Flag - Epson 6200A Core Cpu Manual

3 INSTRUCTION SET
RCF
Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
RDF
Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
72

Reset carry flag

RCF
C 0
1 1 1 1 0 1 0 1
MSB
VI
7
C – Reset
Z – Not affected
D – Not affected
I – Not affected
Resets the C (carry) flag.
ADD A,4
A register 1101
C flag 0

Reset decimal flag

RDF
D 0
1 1 1 1 0 1 0 1
MSB
VI
7
C – Not affected
Z – Not affected
D – Reset
I – Not affected
Resets the D (decimal) flag.
ADD A,8
A register 0110
D flag 1
C flag 0
Z flag 0
1 1 1 0 F5EH
LSB
RCF
0001 0001
1
1 0 1 1 F5BH
LSB
RDF
0100 0100
1 0
1 1
0 0
EPSON
0
LD A,6 ADD A,8
0110 1110
0 0
1 0
0 0
S1C6200/6200A CORE CPU MANUAL