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P89V51RD2 is working on Evaluation board but not working on my application circuit

HI,
I am using P89v51rd2 to control L293D.
My code is running on Eval board but not on the circuit I designed (all ports are reset to High state and code is not running). I used P0.0-P0.3 for input, P2.0-P2.3 as output. only other connection is 11.0592MHz xtal with 33pF caps.
Please let me know what to do
Regards,
FD

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0 Westonsupermare Pier over 11 years ago in reply to Andy Neil

I used to have a logic probe, but I'm not sure it would help determine frequency, just that the pin was toggling.

www.ebay.com/.../141417914555

Then again I used to test 9V batteries with my tongue.
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0 Westonsupermare Pier over 11 years ago in reply to Andy Neil

I used to have a logic probe, but I'm not sure it would help determine frequency, just that the pin was toggling.

www.ebay.com/.../141417914555

Then again I used to test 9V batteries with my tongue.
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