INTERNAL SPECIFICATIONS734.4.2.7 Program status word register (PSW)PSW 0D0H CY AC F0 RS1 RS0 OV F1 PName Address MSB LSB7 6 5 4 3 2 1 0Bit location Flag FunctionPSW.0PSW.1PSW.2PSW.3PSW.4PSW.5PSW.6PSW.7PF1OVRS0RS1F0ACCYAccumulator (ACC) parity indicator."1" when the "1" bit number in the accumulator is an odd number,and "0" when an even number.User flag which may be set to "0" or "1" as desired by the user.Overflow flag which is set if the carry C6 from bit 6 of the ALU orCY is "1" as a result of an arithmetic operation. The flag is also setto "1" if the resultant product of a multiplication instruction (MULAB) is greater than 0FFH, but is reset to "0" if the product is lessthan or equal to 0FFH.RAM register bank switchUser flag which ma be set to "0" or "1" as desired by the user.Auxiliary carry flag.This flag is set to "1" if a carry C3 is generated from bit 3 of theALU as a result of executing an arithmetic operation instruction. Inall other cases, the flag is reset to "0".Main carry flag.This flag is set to "1" if a carry C7 is generated from bit 7 of theALU as a result of executing an arithmetic operation instruction. Inall other cases, the flag is reset to "0".RS1 RS0 BANK RAM ADDRESS0 0 0 00H – 07H0 1 1 08H – 0FH1 0 2 10H – 17H1 1 3 18H – 1FH
