Re: Are there any 65816 card schematics?

["Sean Fahey" <sean.fahey@a2central.com.remove-11gs-this>]

  To: Tristan Mumford
There are two kinds of 65816 options (generally speaking).

The first type is the slotted variety - which can either work cooperatively
with the rest of the system or it completely takes over the system when active.
These options tend to be software driven and therefore not very compatible with
 other applications except those that are written/patched to support it. These
kinds of cards are generally intended for cross-platform development,
scientific analysis or some other "high-end" computing task.

The other 816 option is the processor replacement - and here we have a couple
of sub-options.... some accelerators for the 8 bit II took an 816 no problem -
and while you could execute those extra ops, strange things may happen, plus
you could only address the usual RAM locations.

Then there are the socket boards - like the Applied Engineering 816, which is a
board that mounts over, and replaces the 6502. It has strap cables that can be
hooked up to a RamWorks card and... if I read correctly, a Ramfactor board...
which would give it 2-8MB accessible RAM.

I have one of those AE cards, and it may get cloned eventually.



> Hello.
 
> I was wondering if there are any schematics for a 65816 card. I pretty much
 > just want them for research. I want to make a 65816 card, but I have no
 > idea if it is viable. I know there's the Zip Chips which replace the CPU
 > (right? I've never actually seen one) And the Z80 cards which live in a
 > card slot. So I'm guessing there's no real problem with having a 65816 in a
 > slot?
--- Synchronet 3.13a-Win32 NewsLink 1.83
A2Central.com - Your total source for Apple II computing.