Dear Andy Neil,
Thanks for your reply.

I DID Search for "PCAT Keyboard" and it did not give me this Link.
I have just tested it again and it still does NOT show this link.
Maybe I should have tried searching with the all types of permutations and combinations.

Please note that If I have hurt the feelings of any of the members, I am sorry for it.

I am (most of us are) always working against dead-ines, such as " am supposed to develop/deliver the product yesterday".

So I came to this forum, searching for PCAT Keyboard (some keywords I typed some days ago, which I dont remember), found one (1 out of 2 good links, rest of them were discussions) good link refering to philips application note, to my great surprize my keyboard was up in no time, for which I have already thanked this forum and all the members (not as a custom, but from the deepest levels of my heart).

By the way, if I meet any enthusiast, or any person who has even a little interest in microcontrollers, I inherently tell him to register at this forum, and get a lot to learn about the developments in 8052.


Please Note:
I searched for "PCAT Keyboard" it gives me 6 results, which does not include your App Note.
I searched for "PC AT Keyboard" I got 366 hits, which contains lots of good links. That little space in between "PC" and "AT" has made a lot of difference. I will remember to do this kind of search in the future.

Sorry Mr. Andy Neil,
Kiran V. Sutar.