Date   : Fri, 30 Apr 2010 22:40:45 +1030
From   : station240@... (paul aslin)
Subject: 68B54 memory locations and ANFS puzzle

Sorry stupid M$ email service lost the message contents.

Referring to the memory map at:
http://mdfs.net/Docs/Comp/BBC/AllMem
 
It shows the B/B+ to have the 68B54 in one memory location, and a different
location in the Master.
&FEA0-&FEBF 6854 ADLC Econet controller (B/B+)
&FEC0-&FEDF 6854 ADLC Econet controller (Master)
 
But decompiling ANFS 4.25 shows it only uses &FEA0 to &FEA3
 
So either the memory map is wrong, or does it actually show the location
of the extra address lines (A and B in the socket). I think its the first
one, as 4 address lines equals 16 addresses or &F
 
Seems like such a waste anyway to have 3/4 of a perfectly good 2mhz bus unused.
Anything besides Sprow's ethernet card that uses                                         
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