Stuff on ebay

From: Dwight K. Elvey <dwightk.elvey_at_amd.com>
Date: Thu Oct 3 12:24:00 2002

>From: "Fred N. van Kempen" <Fred.van.Kempen_at_microwalt.nl>
>
>> > ROCKWELL's 6502 (100% 6800 code compatible)
>>
>> He probably runs windows XP on it as well, using it as a
>> firewall/intranet server for the house.
>>
>> "It is best to keep one's mouth closed and be thought a fool, than to
>> open it and remove all doubt."
>
>Besides, wasn't the Rockwell chip the improved version of the original
>(MOS) 6502, called the 65C02? It had some nifty extra instructions and
>an extra addressing mode..
>
>--fred
>

Hi Fred
 I have a Rockwell AIM65 and book. I'll have to see if there
is anything extra. Having worked on both 6800 and 6502 code,
I can assure you that there is no code compatability.
The 6502 traded depth in instructions for more page 0 accesses.
For most applications, this worked well. Those who worked
with Apples will tell you that the OS over used page 0
and didn't leave enough for the users.
 As was mentioned, there was a 6501 that was pin compatable
with the 6800. It was also not code compatable.
 Rockwell also made a number of embedded 6502 application
processors. These are a pain because they are P-MOS and have
non-ttl busses. I have these in my old Gottlieb pinball
machine ( what we pinheads call spider chips ).
Dwight
Received on Thu Oct 03 2002 - 12:24:00 BST