Re: C64 cluster

From: Jim Brain (
Date: 2007-11-13 05:24:19

David Wood wrote:
> Revisiting token ring, there is a problem that can be mitigated.
> Systems that aren't yet running the network software won't pass the packets
> to the next link in the ring.  This can be mitigated by having a circuit
> link the in and out together until an output on the userport is set. ;-)
I sketched out an idea for this, along the same lines.  On powerup, the 
CLKin and DATAin are tied via a 74LS240 or something to CLKout and 
DATAout.  Each are also tied directly to the appropriate serial ports on 
the user port. 

The only problem I had was in breaking the connection.  you need to 
ensure you break the connection while the lines are at rest.  Breaking 
during a transmission would cause a lot of problems.

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