Alex Freed wrote:
> 
> Great thanks to Glenn and Steven for the tech info on the Applicard.

(snip)

> The big question is does the world need it?
> I'll definitely add this functionality to my FPGApple, but does anyone
> care about a board for a real Apple 2/2e?

I would love to see the CardZ180 revisited.  There are Z180 CPUs available at 
high clock rates and the built-in MMU makes things much more interesting.  In 
particular, a variation of Borland's Turbo Modula-2 exists that can use the 
additional memory for program storage.  There's also the fact that the 
CardZ180 operating system will drop right in, offering a number of advantages 
over stock CP/M.

One of the most useful, IMHO, was the fact that the host side of the BIOS 
executed as a normal ProDOS SYSTEM program.  Applications running on the 
64180/Z180 could make system calls to access the ProDOS file system directly. 
  I never got around to writing a full filesystem translation module, but it 
would be possible in theory to have CP/M "mount" ProDOS in such a manner.

Unfortunately I was never able to get the schematic nor PAL maps for the 
version we produced.  Rod sent me a bunch of diagrams, but they pertained to a 
newer design he was working on (plus a SCSI daughter board and a video board 
that never saw the light of day).  I do have a bare CardZ180 PCB somewhere, so 
it should be possible to trace it out with some work.  When I get a round 
tuit, I'm going to go through my working boards to see if any of the PALs have 
the security fuses intact.

Steve
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