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From: ternlund@mozart.cs.colostate.edu (John Ternlund)
Newsgroups: comp.sys.apple2
Subject: IIGS woes
Message-ID: <14753@ccncsu.ColoState.EDU>
Date: 7 May 91 03:22:58 GMT
Sender: news@ccncsu.ColoState.EDU
Organization: Colorado State University
Lines: 64
Originator: ternlund@mozart


This is my 1st attempt at posting at rn. (Hope it works :])
A few things:

  I was wondering if anyone has written any routines to use the
step/trace in the IIgs monitor?  Also, if anyone can recommend
any step/trace code written for the 65816, that would be great.
I have heard only about one, but know nothing about it, and never
found it-- GSbug. Any tips?

  Secondly, off the topic of tracing machine code on a GS,--
has anyone heard of any routines written by J. Snow-- which allow
you to jsl/whatever to send/recieve chars to the GS modem port?
I hear his routines are really nice, for simply accessing the modem
port from 65816 assem. lang.  I would really like to look at them.
Was unable to find them anywhere through anonymous ftp. Also, if
anyone else has successfully used the modem port through assembly
lang. on the GS, or know of any good code to look at, input would
be appreciated. Specifically, how does one go about sending characters
through the modem port?

  Lastly, hard drives, I bought an Overdrive 40meg a while back.
It has been doing some really STRANGE THINGS.  Note, this drive
is from Applied (Ingenuity Inc.) I guess they are no longer around?
It is similar to the InnerDrive -- except external.

  Now for the general hard drive question-- this may be a specific
problem with the internals of the overdrive-- but I am not sure.
The strange occurance is as follows:
I power up my machine-- and the hard drive beeps, and screeches, and
will not read/write to the hard drive for quite a while- until the
drive is warm/hot!

  To make things more complex, after a little while, it will read/write
to some parts of the drive but not others! But after
the hard drive has been on for a while-- generally 20-30mins, it
gets warm/hot, and functions perfectly.  When I first got the drive,
I did NOT have this problem.  Also, I have always kept the drive at
room temp, and park the heads when I power down.  The funny thing is
the DRIVE actually needs to GET HOT before it works right.  I use
to think heat was one of the major causes of component error/failure.
I.e. use a fan etc.  But in my case it sounds like the opposite.
Does anyone who has any knowledge about hard drive mechanisms/ internals
have any clue to what has happend to my drive.  Should I open the
drive up and examine it?  (I have opened just about everything but-
my hardrive) Does anyone 1) have an Ingenuity drive that have had NO
problems or 2) have a drive with similar problems or 3) understand
hard drive mechanisms to decipher what is going on here??? I believe
the problem is temperature related, but I really have never heard
of putting a "heating pad" on your hardrive to make it work right.
Has anyone else?

  Lastly, does anyone know about a newer ROM which goes in the drive
which speeds things up etc...

John Ternlund (reply: ternlund@mozart.cs.colostate.edu)

Note: Comments are my own etc..
 
-- 
                  
                 John Ternlund / Colorado State University
                          Junior - Computer Science
                  Reply: ternlund@mozart.cs.colostate.edu