View source for JNC

{{InstructionBox
|Mnemonic=JNC
|Description=Count and jump if X register is negative.
|Format=JNC <[[displacement|disp.]]>''
|Code=132&nbsp;400
|Affected=X:=X+1, If X<0 P:=P+&Delta; 
|Architecture=[[ND-100]], [[ND-110 CPU|ND-110]]
}}

'''JNC''' is an assembly instruction. It increments the [[X register]] by one. If the X register is negative (bit 15 = 1), it jumps the program execution to the address of the [[program counter]] (P register) plus the value of [[displacement]], that can be between -128 to 127. Else it continues the program execution at (P) + 1.

== References ==
*{{ND-doc|06.014.02|Page 139}}
*{{ND-doc|06.029.01|Page 80}}

[[Category:ND-100 instructions]]