View source for JAN

{{InstructionBox
|Mnemonic=JAN
|Description=Jump if A negative
|Format=JAN <[[displacement|disp.]]>''
|Code=130&nbsp;400
|Affected=If A<0 P:=P+&Delta; 
|Architecture=[[ND-100]], [[ND-110 CPU|ND-110]]
}}

'''JAN''' is an assembly instruction. If the [[A 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]], which can be in the range -128 .. 127. Else it continues the program execution at (P) + 1.

== References ==
*{{ND-doc|06.014.02|Page 139}}
*{{ND-doc|06.029.01|Page 79}}

[[Category:ND-100 instructions]]