Sbc r,i, Reset zero flag – Epson 6200A User Manual
Page 82

Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
Source Format:
Operation:
OP-Code:
Type:
Clock Cycles:
Flag:
Description:
Example:
MSB
LSB
MSB
LSB
C –
Z –
D –
I –
C –
Z –
D –
I –
76
EPSON
S1C6200/6200A CORE CPU MANUAL
3 INSTRUCTION SET
RZF
Reset zero flag
RZF
Z
←
0
1
1
1
1
0
1
0
1
1
1 0
1
F5DH
VI
7
Not affected
Reset
Not affected
Not affected
Resets the Z (zero) flag.
ADD A,3
RZF
Z flag
0
1
0
A register
1101
0000
0000
SBC r,i
Subtract with carry immediate data i from r-register
SBC r,i
r
←
r - i
3
to i
0
- C
1
1
0
1
0
1
r
1
r
0
i
3
i
2
i
1
i
0
D40H to D7FH
II
7
Set if a borrow is generated; otherwise, reset.
Set if the result is zero; otherwise, reset.
Not affected
Not affected
Subtracts the carry flag and immediate data i from the r-register.
SBC A,9
SBC MY,0DH
A register
1000
1111
1111
Memory (MY)
1110
1110
0000
C flag
0
1
0
Z flag
0
0
1
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