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This is the R.O.M.E.68000 Manual version 0.51.
This is an experimental version.
Copyright © 1997 by G. Mezzetti; last update: January 1, 1999.


Ordinary Instructions of the ``Control'' Class

JuMp if Non-Zero

Mnemonic:
JMNZ
Operands:
A,B

Oper. Addressing Group Op. Use Mult. Op.
A jadr a -
B dadr d -

Instruction Key:
64
Formal Description:

if B ≠ 0 then
   @(A) --> IP {jump to A}
end if.

Informal Description

This instruction jumps to A if and only if B is different from zero. Please note that the tested value can lie in a static data item.


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Gustavo MEZZETTI  /  mezzetti@math.unipd.it