Date   : Thu, 20 Aug 2009 22:57:24 +0100
From   : jgh@... (Jonathan Graham Harston)
Subject: maximum econet packet size

Rick Murray wrote:
> Phil Blundell wrote:
> > I was just a bit surprised that the fileserver would choose to use a
packet
> > that large, but I guess L4 has no shortage of buffer space so it
> > isn't too implausible in that case.
 
There seems to be gaps in this conversation. I never saw the above.
 
> Can you flag fill in the middle of a packet? Perhaps all the bridge
 
No, if transmitting you have to terminate the packet and then flag
fill (FE crc crc FF FF FF....), if receiving you have to program
the ADLC to ignore-to-end-of-frame (ehich could legitimately be
forever), and then flag fill.
 
I think a receiver can force the transmitter to abort by forcibly
flag-filling, but that aborts the transmitted frame, doesn't pause
it. The transmitter will retransmit again at some point, possibly a
shorter packet if the protocol it's using decides that.
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
There are three food groups: brown, green and ice cream.