Date   : Mon, 02 Feb 1998 16:17:32 GMT
From   : hick@... (gARetH baBB)
Subject: Re: Osword call with &70 (ADFS)

In message <19.199802021353.NAA17246@...>,
          rst20@... (Rich) wrote:

> b) er, haven't a clue - never really knew anything about the Tube anyway.
> Anyone else?

When an "application" wants to pass data over the Tube it claims it by
calling &406 with A=&Cx (c flag indicates success (clear) or failure) - you
then have exclusive use of the Tube hardware. Once you've done with it you
call &406 with A=&8x.

x is an ID number, TFS has 0, DFS has 1 etc.