NEC PD754244 Manuel D’Utilisation

User’s Manual  U10676EJ3V0UM

Function:  CY 

←

 1

Sets the carry flag.

Function:  CY 

←

 0

Clears the carry flag.

Function:  Skip if CY = 1

Skips the next  instruction if the carry flag is 1.

Function:  CY 

←

 CY

Inverts the carry flag.  Therefore, sets the carry flag to 1 if it is 0, and clears the flag to 0 if it is 1.