beautypg.com

8 carry flag manipulation instructions, Set1 cy, Clr1 cy – NEC PD754144 User Manual

Page 275: Skt cy, Not1 cy

background image

CHAPTER 11 INSTRUCTION SET

275

User’s Manual U10676EJ3V0UM

11.4.8 Carry flag manipulation instructions

SET1 CY

Function: CY

1

Sets the carry flag.

CLR1 CY

Function: CY

0

Clears the carry flag.

SKT CY

Function: Skip if CY = 1

Skips the next instruction if the carry flag is 1.

NOT1 CY

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.

This manual is related to the following products: