Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!yale!husc6!m2c!wpi!greyelf
From: greyelf@wpi.wpi.edu (Michael J Pender)
Newsgroups: comp.sys.apple
Subject: Re: 65c802
Message-ID: <8381@wpi.wpi.edu>
Date: 15 Feb 90 23:51:20 GMT
References: <7905@wpi.wpi.edu> <50029@microsoft.UUCP>
Reply-To: greyelf@wpi.wpi.edu (Michael J Pender)
Organization: Worcester Polytechnic Institute, Worcester ,MA
Lines: 47

In article <50029@microsoft.UUCP> brianw@microsoft.UUCP (Brian WILLOUGHBY) writes:
>In an article greyelf@wpi.wpi.edu (Michael J Pender) writes:
>>A message to laser 128 users, you can pull the 65c02 and replace it,
>>but there is one side effect - the internal controller for the 3.5 inch
>>drives won't work right.
>I'll bet Laser knows about this but are just playing dumb.  Either that
>or the company that designs the stuff, Video Technology, is so
>completely removed that they don't care.

My that sounded nasty.  But Laser Computer knows now, I called them and 
told them.  ROM version 5.0 works just ducky with the 65c802, its
just the ROM version 6.0 that has a problem, no doubt some different
instructions changed the timing rates.  The impression I was left with 
was that I could just buy the $15 chip (ROM version 5.0), or let them 
try to figure it out.  I've waiting for them to call me back, they're
very good that way.

>If anyone has a number for Video Technology. please let me know.

I have an 800 number for them, if I give it to you do you promise
not to tell them I gave it to you? :^)

>>I called Laser computer, and they said it's probably a timing problem
>>due to the way everything else works fine.
>
>Well, it's actually because the 65C802 follows the 6502 spec to the
>letter in Emulation mode, while the original 65C02 in your Laser
>didn't.

I don't know about you, but it makes sense to me, that if all the machines
are being produced with a 65c02 in them, you make use of the additional
instructions and addressing modes of the superior chip to produce a 
faster machine.  Where would the IIGS be if it restricted itself to 6502
instructions?  

>This is how I found out about the problem.  I purchased a UDC for my
>Apple ][ Plus and I had a similar problem because the UDC wouldn't
>work for me.  Now that I have a //e, the UDC works fine with the 'C802. 

But my UDC works just ducky with my 65c802, its just the internal card
that does the wierdness --> a timing problem.

---
Michael J Pender Jr  Box 1942 c/o W.P.I.   W.O.S. is not dead.
greyelf@wpi.bitnet   100 Institute Rd.     ...its time to get started,
greyelf@wpi.wpi.edu  Worcester, Ma 01609   there is much to be done.
If my next computer isn't a IIgs, it won't be an apple... Me.