fix for apm.4

[Alexander Leidinger]

Hi,

the patch makes apm.4 consistent with LINT ("isa?"->"nexus?").

Bye,
Alexander.

-- 
                     Withdrawal is for quitters.

http://www.Leidinger.net                  Alexander+Home @ Leidinger.net
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21c21
< .Cd device apm0 at isa?
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> .Cd device apm0 at nexus?