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From: elkins@ttidcc.UUCP (Richard Elkins)
Newsgroups: net.micro.pc,net.micro.att
Subject: Re: Detecting the presence of ANSI.SYS
Message-ID: <97@ttidcc.UUCP>
Date: Mon, 20-Jan-86 12:42:31 EST
Article-I.D.: ttidcc.97
Posted: Mon Jan 20 12:42:31 1986
Date-Received: Thu, 23-Jan-86 08:26:19 EST
References: <131@suneast.uucp> <2135@phri.UUCP>
Reply-To: elkins@ttidcb.UUCP (Richard Elkins)
Organization: Transaction Technology, Inc. (CitiCorp), Santa Monica
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Xref: watmath net.micro.pc:6618 net.micro.att:833

In article <2135@phri.UUCP> greenber@phri.UUCP (Ross Greenberg) writes:
>> Does anyone know of a quick and reliable way of detecting
>> whether ANSI.SYS has been installed? 
>> -- 
>
>A quick hack:
>	Send the ANSI sequence to position your cursor to some location
>	{x,y}.
>
>	Send the ANSI sequence to read current cursor poition.  If
>	they match, you're running ANSI, else you're not.
>
>ross m. greenberg
>ihnp4!allegra!phri!greenber

Better make sure that you weren't already positioned at {x,y}, yes?
Also, if ANSI.SYS is not installed, the results of prompting for a
cursor position report would yield random results.

A "slow hack" (no flames intended):

Make sure that you are in one of the text modes.
With ROM-BIOS, position to {0,0}.
With ANSI.SYS, position to {1,0}.
Use ROM-BIOS to fetch the current cursor coordinates.
If {1,0} then ANSI.SYS is installed; otherwise not.