Hi , I want to interface Epson TM-U220 dotmatrix printer with 89c51. I want parallel interface. I have 8 data lines and for handshaking purpose I used BUSY AND STROBE line. Still I am not getting the exact output . Pls help me in this direction.
And how do you suppose that anyone can offer any help from the few details you have given.
The only thing that's possible to say is that there must be a fault or mistake in your software, or a fault or mistake in your hardware - or both!
You need to do some debugging to narrow-down what's going wrong, and where:
www.8052.com/.../120313
Nodody else can debug your system, because nobody else can see it, and you've given no useful information about it!