Microchip Technology MA330016 Data Sheet

DS70290J-page 22

© 2007-2011 Microchip Technology Inc.

  

bit 7-5

IPL<2:0>: CPU Interrupt Priority Level Status bits

111 = CPU Interrupt Priority Level is 7 (15), user interrupts disabled
110 = CPU Interrupt Priority Level is 6 (14)
101 = CPU Interrupt Priority Level is 5 (13)
100 = CPU Interrupt Priority Level is 4 (12)
011 = CPU Interrupt Priority Level is 3 (11)
010 = CPU Interrupt Priority Level is 2 (10)
001 = CPU Interrupt Priority Level is 1 (9)
000 = CPU Interrupt Priority Level is 0 (8)

bit 4

RA: REPEAT Loop Active bit
1 = REPEAT loop in progress
0 = REPEAT loop not in progress

bit 3

N: MCU ALU Negative bit
1 = Result was negative
0 = Result was non-negative (zero or positive)

bit 2

OV: MCU ALU Overflow bit
This bit is used for signed arithmetic (2’s complement). It indicates an overflow of a magnitude that
causes the sign bit to change state. 
1 = Overflow occurred for signed arithmetic (in this arithmetic operation)
0 = No overflow occurred

bit 1

Z: MCU ALU Zero bit
1 = An operation that affects the Z bit has set it at some time in the past
0 = The most recent operation that affects the Z bit has cleared it (i.e., a non-zero result)

bit 0

C: MCU ALU Carry/Borrow bit
1 = A carry-out from the Most Significant bit of the result occurred
0 = No carry-out from the Most Significant bit of the result occurred

Note 1: This bit can be read or cleared (not set).

2: The IPL<2:0> bits are concatenated with the IPL<3> bit (CORCON<3>) to form the CPU Interrupt Priority 

Level (IPL). The value in parentheses indicates the IPL if IPL<3> = 1. User interrupts are disabled when 
IPL<3> = 1.

3: The IPL<2:0> Status bits are read only when NSTDIS = 1 (INTCON1<15>).