Re: Cobalt Micro (was Re: Build your own Motherboards)
Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 7 Sep 1998 21:04:02 +0100 (BST)
> > If you want a simple interface for wiring toys too that you can build out of
> > bits of bent wire, 8 bit microcontrollers and parallel ports, and that has
> > a huge range of existing compatible components use i2c bus. You can bitbang
> > i2c on a parallel port and it can be quite quick (1Mbit) over random pieces
> > of wire.
>
> It's still much more complicated than things you need for a simple ISA
> card -- a microcontroller instead of few TTL chips (or single GAL).
On the contrary, you can do i2c with no additional hardware on the PC
end, and with just i2c aware logic devices the other end if you wish.
A parallel port will drive i2c
Alan
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