RE: [PARPORT] IEEE1284 interface (and 1284.3)

Tim Waugh (
Wed, 2 Dec 1998 16:45:50 -0000

Hi Thomas,

> How do you intend to switch between forward and reverse mode in ECP?

The write function would do a reverse-to-forward transition if we were in
reverse mode, and vice versa for the read function. Code for doing that is
in the demo implementation I put on

> And how do you distinguish between address/data transfers in EPP and
> ECP?

I'll check when I get back tonight. Those functions are basically the
"SPI_IO" function that IEEE1284.3 talks about - they are not of my own


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