AT80c51 Bus problem...plzzz helpppp

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myhumps007

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hey......im using DS12887 whihch uses bus to tranfer data and using at89c51-when i use use at89c51...it comes with 2-bus package...
on bus for a0-a7 and other for a8-a15...
i hav to use only one...and i want to remove the other one to use the pins...
im attaching the schematic...plzzz help
 

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u still have port 2 unused,why dont u use port 2 as the required pins
 
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