Date   : Thu, 23 Jul 2009 13:04:12 +0100
From   : sai2791@... (Steve Inglis)
Subject: RFC: BBC Ethernet API

On 23 Jul 2009, at 01:50, Jonathan Graham Harston wrote:

>         Request For Comments - Proposed BBC Ethernet API

<Snip>

> On entry: A%=192, X%=control block, Y%=X%DIV256
>          X%?0  = OSWORD send block length
>          X%?1  = OSWORD receive block length
>          X%?2  = command - same as RISC OS SWI Socket_ command number
>          X%?3  = 0
>          X%!4  = socket
>          X%!8  = address
>          X%!12 = length
>          X%!16 = flags
>          X%!20 = address
>          X%!24 = address length
>
<Snip>

It may well be worth the time now to increase the size of the address  
space from/to if we are not going to limit the API to ipv4.