🚀 go-pugleaf

In article <AUSTIN.90Feb23155939@bucsf.bu.edu> austin@bucsf.bu.edu (Austin H. Ziegler, III) writes:
$	For a program which I'm writing, I want to provide ANSI, BIOS, and
$DMA screen support.  It is easy to determine whether I should use BIOS or
$DMA, but I'm having problems detecting ANSI.  If anyone can point me to how

   Well, I don't have a program, but here are a couple of ideas which
will work:

1.  Position the cursor to some known location using the BIOS, and then
    write some ANSI code and look at what's in that known location.  If
    ANSI.SYS (or replacement) is present, it will be what was there
    before; otherwise, you should see the escape code you sent.

2.  Clear the keyboard buffer and send the ANSI code that reports the
    status of the display, then see if anything appears in the keyboard
    buffer (also check to make sure it's what you expect so that you
    know ANSI put it there and that it wasn't the user typing something).

   Don't forget to clear the screen immediately afterwards if ANSI.SYS
isn't present, or the user will wonder what that garbage that appears on
the screen is there for!
-- 
Stephen M. Dunn                               cs4g6ag@maccs.dcss.mcmaster.ca
          <std_disclaimer.h> = "\nI'm only an undergraduate!!!\n";
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               I Think I'm Going Bald - Caress of Steel, Rush