MEMORY MAP KS57C2308/P2308/C2316/P2316
4-24
PSW — Program Status Word FB1H, FB0H
Bit 76543210
Identifier CSC2 SC1 SC0 IS1 IS0 EMB ERB
RESET Value (1) 0000000
Read/Write R/W RRRR/W R/W R/W R/W
Bit Addressing (2) 8881/4/8 1/4/8 1/4/8 1/4/8
CCarry Flag
0No overflow or borrow condition exists
1An overflow or borrow condition does exist
SC2–SC0 Skip Condition Flags
0No skip condition exists; no direct manipulation of these bits is allowed
1A skip condition exists; no direct manipulation of these bits is allowed
IS1, IS0 Interrupt Status Flags
0 0 Service all interrupt requests
0 1 Service only the high-priority interrupt(s) as determined in the interrupt
priority register (IPR)
1 0 Do not service any more interrupt requests
1 1 Undefined
EMB Enable Data Memory Bank Flag
0Restrict program access to data memory to bank 15 (F80H–FFFH) and to
the locations 000H–07FH in the bank 0 only
1Enable full access to data memory banks 0, 1, 2, and 15
ERB Enable Register Bank Flag
0Select register bank 0 as working register area
1Select register banks 0, 1, 2, or 3 as working register area in accordance with
the select register bank (SRB) instruction operand
NOTES:
1. The value of the carry flag after a RESET occurs during normal operation is undefined. If a RESET occurs during
power-down mode (IDLE or STOP), the current value of the carry flag is retained.
2. The carry flag can only be addressed by a specific set of 1-bit manipulation instructions. See Section 2 for
detailed information.