Samsung S3C8275X - Manual (Page 161)

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X INSTRUCTION SET
6-27
CCF
— Complement Carry Flag
CCF
Operation: C
← NOT C
The carry flag (C) is complemented. If C = "1", the value of the carry flag is changed to logic
zero; if C = "0", the value of the carry flag is changed to logic one.
Flags: C: Complemented.
No other flags are affected.
Format:
Bytes Cycles Opcode
(Hex)
opc 1 4 EF
Example: Given: The carry flag = "0":
CCF
If the carry flag = "0", the CCF instruction complements it in the FLAGS register (0D5H),
changing its value from logic zero to logic one.