Mohammad Al-Tahan wrote:
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Dear sir,
It seems that the i8279 Keyboard/Display is now obsolete, but i

(big sorry for my English :)
I know about that. But I'm student, and we use i8279 in a learning process.

have a hard copy of the Data sheet in a book. I'll try to scan it and send you the scanned papers as soon as possible.
I'll email you the copy as soon as i scan it.

Thank you.

I've used this controller with the i8052 and it's great dealing with K/B & Display. Basicly, You will use the ALE line of the 8052 as a clk I/P

Yes.

to the 8052. Also, you will use the MOVX instruction in order to access the registers of the i8279.

Yes.

I have a problem with programming i8279.