[N8VEM: 18654] Re: Vintage + modern = fun

[c***@public.gmane.org]

Hi James!
I updated my Wiki page on cocopedia.com to include my success with my Multicomp Z80 CP/M 2.2 Microcomputer.
I have gone on and bought another FGPA Mini-Development PCB and compiled a Multicomp 6800 version using the Altair680 rom monitor with the serial I/O port address modified for the Multicomp Serial 1 port. I'm going to make me an Altair680 Multicomp yet!
I also have compiled 6809 Grant Cubix Multicomp, 6809 Extended Basic Multicomp and am beginning to add the external ram to the 6809 Multicomp as well. :)
I just might end up with a whole family of Multicomp Microcomputers. :D
Did you know that OS-9 ran on the SWTPC 6800 Microcomputer at one point! I just recently found this interesting tidbit of information out several days ago.
I have the Z80 in a runnable state and I'm laying the ground work for the beginnings of my 6809 and 6800 Multicomp Microcomputers and I'm having loads of fun doing things I only dreamed of back in the day! Take care my friend.

Kip Koon
computerdoc-***@public.gmane.org
http://www.cocopedia.com/wiki/index.php/Kip_Koon
http://computerpcdoc.com/

-----Original Message-----
From: n8vem-/***@public.gmane.org [mailto:n8vem-/***@public.gmane.org] On Behalf Of James Moxham
Sent: Tuesday, September 09, 2014 7:47 PM
To: n8vem-/***@public.gmane.org
Subject: Re: [N8VEM: 18653] Re: Vintage + modern = fun

Hi Kip,

Sounds like you are racing ahead!

The MMU and MP/M has been me and Max exchanging mostly private emails. I
wrote the MMU and he wrote the MP/M code. It isn't finished yet though -
he is working on handling interrupts from multiple sources and I'm deep
inside the theory of Moore State Machines in vhdl
http://www.altera.com/support/examples/vhdl/vhd-state-machine.html

I'll post the 4K MMU code when I get home. Max has written a full page
step-by-step instruction on getting multiple operating systems working via
one SD card but he sent me that as a private email so I should defer to
him regarding posting the code (or sending it directly to you).

We are thinking about a new board - more RS232 ports, maybe dual SD cards,
all the connectors along one side so it fits better in a box.

Cheers, James Moxham

Hi Everyone!
I am at the point now in my Z80 Multicomp Microcomputer that I wish to
implement an MMU into the mix so I can run CP/M 2.2, CP/M 3 & MP/M all
from the same SD card! I'm having trouble finding the email with the
MMU VHDL as an attachment or maybe it was a link. Would someone please
send the MMU.zip file out again or the link to it? I would appreciate
it! Thanks a bunch! Also concise directions for setting up multiple
systems, BIOS, XIOX, partitions, etc. would be most welcome. :D I
really what to take this thing to the next level.
For the 6809 Fans,
I want to put in a 4K and an 8K MMU so I can start playing with memory
paging schemes. I'm aiming at running OS-9, Flex9 and ultimately
NitrOS-9 v3.3.0 on my 6809 Multicomp Microcomputer! If I have left out
a request for any other parts of code I may need, then by all means send
it to me please. I would appreciate it very much. Take care my friends.
Kip Koon
http://www.cocopedia.com/wiki/index.php/Kip_Koon
http://computerpcdoc.com/