🚀 go-pugleaf

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.