Path: utzoo!attcan!uunet!portal!atari!kbad
From: kbad@atari.UUCP (Ken Badertscher)
Newsgroups: comp.sys.atari.st
Subject: Line F
Message-ID: <1841@atari.UUCP>
Date: 1 Dec 89 22:04:28 GMT
References: <1989Nov8.182505.11625@uunet!unhd> <23996@cup.portal.com> <24111@cup.portal.com> <1261@atha.AthabascaU.CA> <5312@sdcc6.ucsd.edu> <1819@atari.UUCP> <4725b108.20b6d@apollo.HP.COM>
Distribution: na
Organization: Atari Corp., Sunnyvale, CA
Lines: 14

rehrauer@apollo.HP.COM (Steve Rehrauer) writes:
| I know what you mean by "Line F", but what's the "compression" refer to re:
| ST ROMs?  (Usually I'm only this dense on Mondays & national holidays...)

The line F compression I refer to is a method we used in ST ROM which
basically replaces common operations with line F instructions.  The
line F handler is able, by decoding the $Fxxx instruction, to determine
what operation to perform.  The handler then dispatches the exception
to the appropriate OS routine.

-- 
   |||   Ken Badertscher  (ames!atari!kbad)
   |||   Atari R&D System Software Engine
  / | \  #include <disclaimer>