From: "Fred N. van Kempen"
<Fred.van.Kempen(a)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