Re: [OT] Re: A86: Theory question
[Prev][Next][Index][Thread]
Re: [OT] Re: A86: Theory question
> well, I think a protocol like ethernet could work,
> but it would need to get all of the z80's attention,
> or else calcs could miss packets:
>
> To send:
> - wait for line A to be '1'
> - start to send packet. Another calc could have
> seen line A at '1' and can be sending also, so
> after sending a bit through line B, the calc would
> have to read it to be certain that the sent bit
> is it's own bit and not other's calc bit.
>
> To receive:
> - a calc must always be listening. It must
> listen all the packets, because some may
> be for her self.
> This is the problem, this would require
> all of the calc's attention.
>
> Maybe some round-robin way would work. I'm going to
> let it for someone else to think about...
>
> NSJ
Yeah, an implementation of Ethernet would definitely require another
processor of some kind. Otherwise the calc wouldn't be able to do it and
something else at the same time.
_______________________________________________________________
Get Free Email and Do More On The Web. Visit http://www.msn.com