NEC 78K/0 Series - Manual (Page 109)

CHAPTER 5 EXPLANATION OF INSTRUCTIONS
109 User's Manual U12326EJ4V0UM
Branch if Not Carry
BNC
Conditional Branch with Carry Flag (CY = 0)
[Instruction format] BNC $addr16
[Operation] PC
← PC+2+jdisp8 if CY = 0
[Operand]
Mnemonic Operand($addr16)
BNC $addr16
[Flag]
Z AC CY
[Description]
• When CY = 0, data is branched to the address specified by the operand.
When CY = 1, no processing is carried out and the subsequent instruction is executed.
[Description example]
BNC $300H; When CY = 0, data is branched to 0300H (with the start of this instruction set in the range of
addresses 027FH to 037EH).