Date   : Thu, 28 Jul 2005 21:54:12 +0100
From   : Mike Tomlinson <mike@...>
Subject: Re: Econet-Ethernet bridge

In article <Marcel-1.53-0727182555-0e8xSBG@...>, Johan
Heuseveldt <johan@...> writes

>Make sure you have the correct one. Early Master version didn't have
>the contention hardware on it. This was done in software by comparing
>the bytes sent with the bytes read back. Very soon though, the boards
>has the same contention hardware on it, as the BBC-B has.

Telling the difference is easy.  The version of the module without
collision detection has 4 chips, the one with has 6 chips.

4-chip modules should be discarded.