Path: utzoo!mnetor!uunet!oddjob!mimsy!cvl!umd5!rutgers!clyde!watmath!watdcsu!bmaraldo
From: bmaraldo@watdcsu.waterloo.edu (Commander Brett Maraldo)
Newsgroups: comp.sys.hp
Subject: Speeding up the HP28C
Message-ID: <4374@watdcsu.waterloo.edu>
Date: 3 Feb 88 17:21:53 GMT
Distribution: comp
Organization: Unit 36 Research
Lines: 23


  I recieved a preliminary copy of Dr. WAC Mier-Jedrzejowicz book,
  'Customize Your HP-28C'.  It is excellent and I suggest it to anyone who
  owns a 28C.  In it, he describes how to speed-up the 28C by changing two
  capacitors.  The speed increase is bout 180%.  This makes a big
  difference on all operations.  Happily, the clock and beeper functions
  are unaffected as they are controlled by a quartz clock.  If you are
  interested in a description of the modification, please email me.  Better
  yet, buy Mier's book (preliminary copies are only available 'to friends'
  and the book will be ready in the Spring).

				Brett L Maraldo

  p.s. I want an HP28S.  Is there any trade-up arrangements being made by
  hp or other companies (i can put another 32k (or even 64k) in my 28C but
  i can't change the software).  Do you think it would simply be a matter
  of changing the ROMs??

-- 
               --------     Unit 36 Research     ---------
	                "Alien Technology Today"
  	 	    bmaraldo@watdcsu.waterloo.edu 
  	 {allegra,decvax,ihnp4,utzoo}!watmath!watdcsu!bmaraldo