gc80c510 CORERIVER Semiconductor, gc80c510 Datasheet - Page 199

• Manufacturer Part Number: gc80c510
• Description: Eprom/rom 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

13.22 PSW (D0h) : Program Status Word Register
MiDAS1.1 Family
Symbol
Bit No.
RS1
RS0
OV
CY
AC
F0
F1
P
Carry Flag.
Auxiliary Carry Flag.
User Flag 0.
Register Bank (RB) Select.
Overflow Flag.
User Flag 1.
Parity Flag.
R/W(0)
addition) or borrow (during subtraction). Otherwise it is cleared to 0 by all arithmetic
operations.
addition), or borrow (during subtraction) from the high order nibble. Otherwise it is
cleared to 0 by all arithmetic operations
borrow (subtraction), or overflow (multiply or divide). Otherwise it is cleared to 0 by all
arithmetic operations.
parity); and cleared to 0 on even parity.
CY
7
This bit is set when if the last arithmetic operation resulted in a carry (during
This bit is set to 1 if the last arithmetic operation resulted in a carry into (during
This is a general purpose flag for software control.
These bits select which register bank is addressed during register accesses.
This bit is set to 1 if the last arithmetic operation resulted in a carry (addition),
This is a general purpose flag for software control.
This bit is set to 1 if the modulo-2 sum of the eight bits of the accumulator is 1 (odd
RS1
0
0
1
1
R/W(0)
AC
6
R/W(0)
RS0
F0
5
0
1
0
1
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R/W(0)
RS1
4
Description
Register Bank
0
1
2
3
R/W(0)
RS0
3
R/W(0)
OV
2
00h ~ 07h
08h ~ 0Fh
10h ~ 17h
18h ~ 1Fh
R/W(0)
Address
F1
1
R(0)
0
P