PSW register not displaying correct content.

[dawarhusain]

The PSW register is not displaying its actual content in sidebar and always showing 0. When pushing the PSW register to stack, we can see the higher byte shows Accumulator and lower byte shows Flag Register. But in the sidebar it always shows zero.

Further there is an issue with the overflow bit in flag register (second least significant bit). It is always set. This bit should only be set when result of addition/ subtraction comes opposite of what is expected arithmetically. The overflow flag is an unspecified flag.