Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!usc!jarthur!nntp-server.caltech.edu!toddpw
From: toddpw@nntp-server.caltech.edu (Todd P. Whitesel)
Newsgroups: comp.sys.apple2
Subject: Re: Rom01 vs rom03
Message-ID: <1990Dec14.061231.1470@nntp-server.caltech.edu>
Date: 14 Dec 90 06:12:31 GMT
References: <9012120502.AA02196@apple.com> <14719@smoke.brl.mil> <1990Dec13.090059.21608@nntp-server.caltech.edu> <14731@smoke.brl.mil>
Organization: California Institute of Technology, Pasadena
Lines: 19

gwyn@smoke.brl.mil (Doug Gwyn) writes:

>In article <1990Dec13.090059.21608@nntp-server.caltech.edu> toddpw@nntp-server.caltech.edu (Todd P. Whitesel) writes:
>>> Newer versions offer features that older versions
>>>didn't, so if an application depends on such new features it will fail
>>>if you try to execute it using an old System Disk.
>>Not if you check first by calling GetVersion ($202A).

>Why, does calling GetVersion somehow magically make missing "future
>features" appear?  Wow, what an operating system!

Very funny. I was referring to the fact that GetVersion allows the application
to put up a nice box saying "yuck! you're still using System 3.0! Go Get 5.0.4
or something even more recent! (OK)" instead of just barfing. This is what
GetVersion is FOR -- Apple doesn't put that kind of call in just so you can
write cute little DA's that tell the system version.

Todd Whitesel
toddpw @ tybalt.caltech.edu