Re: 85xx <------> 65xx Mutually replaceable?

From: Raymond C. Bryan (raycomp_at_visi.com)
Date: 2003-07-07 07:34:45

>t in this case, even the 6510 would not be able to see
>anything useful.
>
>What I see as possible candidates (the list is not complete, there might be
>other things, too):
>
>- the VIC-II itself
>- the PLA
>- the CIA#2 (which generates the address bus lines A14 and A15 for the VIC).

My experience concurs with Spiro - I have never seen a broken 225 Rom 
do the symptoms described - but the PLA or CIA can do that.
--Ray
-- 
---------------------------------------------------------------
|Raymond C. Bryan  651-642-9890 vox      | The battle is sometimes |
|Raymond Computer  651-642-9891 fax      | to the small for 
|             
|795 Raymond Ave   -email:  raycomp      | the bigger they are     |
|St Paul MN  55114    @visi.com          | the harder they fall.   |
|USA              Amiga - Commodore      |     -- James Thurber -- |
http://www.raymondcomputer.com
---------------------------------------------------------------

       Message was sent through the cbm-hackers mailing list

Archive generated by hypermail pre-2.1.8.