gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 187

• Manufacturer Part Number: gc80c520a
• Description: Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

15.49 B Register (B)
This register serves as a second accumulator for certain arithmetic operations.
15.50 Extended Interrupt Priority Register (EIP)
Bit No.
Bit No.
F0h
F8h
Symbol
PWDT
PX5
PX4
PX3
PX2
-
MiDAS1.0 Family
R/W(0)
B.7
7
7
-
-
Function
Reserved.
Watchdog timer Interrupt Priority. This bit controls the priority of the watchdog timer
interrupt.
0: The Watchdog timer interrupt is a low priority interrupt.
1: The Watchdog timer interrupt is a high priority interrupt.
External Interrupt 5 Priority. This bit controls the priority of the external interrupt 5.
0: The external interrupt 5 is a low priority interrupt.
1: The external interrupt 5 is a high priority interrupt.
External Interrupt 4 Priority. This bit controls the priority of the external interrupt 4.
0: The external interrupt 4 is a low priority interrupt.
1: The external interrupt 4 is a high priority interrupt.
External Interrupt 3 Priority. This bit controls the priority of the external interrupt 3.
0: The external interrupt 3 is a low priority interrupt.
1: The external interrupt 3 is a high priority interrupt.
External Interrupt 2 Priority. This bit controls the priority of the external interrupt 2.
0: The external interrupt 2 is a low priority interrupt.
1: The external interrupt 2 is a high priority interrupt.
R/W(0)
B.6
6
6
-
-
R/W(0)
B.5
5
5
-
-
R/W(0)
R/W(0)
PWDT
B.4
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4
4
R/W(0)
R/W(0)
PX5
B.3
3
3
R/W(0)
R/W(0)
PX4
B.2
2
2
R/W(0)
R/W(0)
PX3
B.1
1
1
R/W(0)
R/W(0)
PX2
B.0
0
0
EIP
B