System V R 3.1,3.2,3.3, 4 ? What's the diff ?

[Paul de Bra]

In article <1990Oct23.015640.23819 at melb.bull.oz.au> sjg at sun0.melb.bull.oz.au (Simon J. Gerraty) writes:
>Ok, I have asked all the System V guru's I know.  (Even tried
>AT&T :-) and  have got nowhere.  So perhaps the net can help.
>
>Can anybody provide a list (succinct if possible) of the major
>changes introduced with System V 3.1,3.2 etc.  A reference to a
>suitable source would also be useful.

I don't know the whole scoop, but starting from 3.1 i can tell you that:
3.2 introduced xenix compatibility (the ability to execute 286 and 386
xenix binaries on a 386 and to mount xenix file systems).
As far as I know there is no 3.3.
For the 386 there is a 3.2.1 (also known as 3.2u) which introduced VGA
support, while 3.2.2 introduced SCSI support.
The next version is 4.0, which supposedly introduces bsd compatibility.
As many tools and routines in system Vr3.2 and in BSD unix (4.2 or 4.3)
exist with the same name but a different functionality,
The system will not be able to look exactly like a bsd system and as a
system v system at the same time.

Paul.
(debra at research.att.com)