Path: utzoo!attcan!uunet!samsung!usc!apple!portal!cup.portal.com!cliffhanger
From: cliffhanger@cup.portal.com (Cliff C Heyer)
Newsgroups: comp.os.msdos.programmer
Subject: Need way to detect XT BIOS
Message-ID: <31962@cup.portal.com>
Date: 21 Jul 90 21:10:08 GMT
Organization: The Portal System (TM)
Lines: 19

I have the Phoenix "System BIOS" books and
they are no help, because what the suggest
causes a crash on certain XT BIOSes.

Does anyone know a way to check a BIOS int 16h
to see if it can handle the extended keyboard?

Some XT BIOSes crash if you try a Fcn 10h on
them to test if the extended keyboard exists.

I thought the BIOS was written so that if
an interrupt contains an invalid function code
the BIOS does nothing and returns. But in this
case it seems to crash.....I thought I could
try a 10h and if it returned nothing I could
try a 00h standard XT read.

Please mail & I'll post,
Cliff