can somebody help me out on how to interface an 8051 ic to a 8742 keyboard controller ic..?? i am connecting a keyboard through a ps2 connector to the board...this interface is controlled by 8742..how do i obtain the keys pressed at 8051?
It is very well documented. It just needs a little bit of common sense use of Google to find plenty of good projects that interface with a PS/2 keyboard.
There again, the common sense approach would surely have been to use Google first - Instead of posting on the Keil forum.
u think i havnt done that???i've googld on how to interface 8742 to c51...didnt find anything useful..hence posted here...
"u think i havnt done that???"
Well ... I just did a search and the TOP of the list was an Intel sourced PDF which details the pinout and timing. That should surely be a good start.
But how would interfacing it to a C51 differ from interfacing it to anything else?
Do you think that the 8742 behaves any differently when connected to a C51 than when connected to anything else?
Similarly, do you think that the C51 behaves any differently when connected to an 8742 than when connected to anything else?
General procedure for interfacing anything to anything else:
www.8052.com/.../160143
You do have the Datasheet for the 8742, don't you...?
connecting/converting (I do not remember exactly) a PS2 keyboard to I²C, use half of it
Erik