Marshall Rose (firstname.lastname@example.org)
Sat, 20 Dec 86 13:36:56 -0800
An excellent question. As with most "international standards" you
have to qualify which point in the life of you're talking about:
WD - working draft
DP - draft proposal
DIS - draft international standard
IS - international standard
There are, to my knowledge, no implementations of the FTAM DIS, as
it was only recently released (August, 1986). I expect this to
change in about six months.
There are however some implementations of the FTAM DP, I believe
that DEC has one, that Concord Data Systems has one, and probably
about five other MAP/TOP vendors (a few even claim to have it
running on the PC). I'll ask my local MAP/TOP guru here which
implementations are available and I'll get back to you.
Organizations like the NBS and COS (Corporation or Open Systems) in
the US and SPAG and ECMA in Europe have done a fine job of
specifying the "agreed subset" of FTAM which should be implemented.
This makes the harmonization problem (getting different vendors
implementations to work together) much easier. However, the FTAM
DIS and the FTAM DP are NOT, repeat NOT, compatible (they even use
different underlying services), so it's not clear how much of a DP
implementation can be used when building a DIS implementation.
To comment a bit on some related mail: if I remember the FTAM spec
correctly, you can do things like forced-append writes and
record-level access. I don't think you'll see the first generation
of FTAM DIS implementations do this, but these features are built
into the FTAM.
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