[Coco] Kipper SBC v1 Update

[Michael Brant]

Kip,
I may have missed this but what are your estimated costs?
On Mar 14, 2015 3:01 PM, "Kip Koon" <computerdoc at sc.rr.com> wrote:

> Hi Guys,
>
> I thought that RetroInnovation's suggestion was useful, so I redid the glue
> logic and now the Kipper aka Keeper SBC v1 now has these additional
> features
> and if my logic (I miss Nimoy) is correct, it does this with just 8 ICs.
>
> There are now two memory maps available with the ability to disable all
> ram,
> rom and I/O!  This makes the following 3 Memory Maps available to the User.
>
> Grant's Default Memory Map (with a slight twist)
>
> Ram = $0000-$7FFF - 32KB
>
> Open = $8000-$9FFF - 8KB
>
> Serial I/O = $Axxx - 4KB (To keep compatibility with the Original Code)
>
> Open = $Bxxx - 4KB
>
> Rom = $C000-$FFFF 16KB (Full Rom Available)
>
> Alternate Memory Map
>
> Ram = $0000-$7FFF - 32KB
>
> Open = $8000-$BFFF - 16KB (If Ram is put here, then 48KB Ram)
>
> Serial I/O = $Cxxx - 4KB
>
> Rom = $D000-$FFFF - 12KB
>
> Grant's 6809 Extended Basic Interpreter still fits.  Software needs a
> change
> to the I/O to reflect the new Addressing.
>
> And finally the one that some of you were wanting waiting for, the ability
> to add Anything!
>
> Open Memory Map
>
> Open = $0000-$FFFF - 64KB
>
> This is achieved by asserting the !BASE_ENABLE pin on the Kipper Bus HIGH.
> All Ram, Rom and I/O is disabled and removed from the Memory Map.  Now the
> Kipper SBC becomes the Kipper CPU Board Ready for All your design
> modifications.  Now What do you think?
>
> I believe this will be the final configuration for the Kipper SBC v1.
> After
> I get the green light from my second set of eyes for correctness and
> completeness, off to the PCB Fabricator I go. Hi Ho, Hi, Ho, PCB creation I
> go.  :)
>
> Ideas, Suggestions, feature wishes are always welcome.  Thanks for all your
> interest!
>
>
>
> Kip Koon
>
>  <mailto:computerdoc at sc.rr.com> computerdoc at sc.rr.com
>
>  <http://www.cocopedia.com/wiki/index.php/Kip_Koon>
> http://www.cocopedia.com/wiki/index.php/Kip_Koon
>
>
>
>
>
>
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