Re: [OT] Re: A86: Theory question


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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.


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