[Coco] Where is The "Three Mugateers" Image address in ROM ?

[David Ladd]

CoCo 3 related information you can find in:
https://colorcomputerarchive.com/repo/Documents/Books/Unravelled%20Series/super-extended-basic-unravelled.pdf
page 57

Looks like the image starts at address $C405 in memory.  Now since this is
based on the ROM starting at $8000
The math which would be $C405-$8000 should come to $4405 in the ROM dump
file.  If that is correct.

Hope that helps.

Sincerely,
David Ladd
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On Fri, Apr 5, 2024 at 11:58 AM coco--- via Coco <coco at maltedmedia.com>
wrote:

>
> I would like to know where The "Three Mugateers" Image is located in the
> in Coco 3 Motherboard ROM.
> As well as at what addresses the code that handles the Hard Reset that
> displays this picture is located.
>
> I was thinking that if you have a CoCo 3 with a socketed CPU as many do
> thanks to the 6309 a board could be built
> that masks out that portion of the Motherboard ROM, rather then just
> putting a picture there there could be code
> to allow custom code on flash memory to ran instead. The board should
> also be able to act as the 2MB address enabling board compatible with
> all or at least the major 2MB and maybe 8MB upgrades that already exist
> and not
> be physically in way of a GIME-X card.
>
> It's uses could be onboard GAMES, DIAGNOSTICS, DRIVE WIRE CLIENT,
> TESTING EXTENSIONS TO "Extended Color Basic" for
> supporting the GIME-X and Drivewire" ect. For Example given 512K of
> flash you could have sixteen banks of 32K with
> a dedicated program in bank F that could load a rom image to any of the
> fourteen banks 1 to E from any of
> Floppy Drive (If Compatible Controller in Cartage Slot) , Drive Wire (
> If Attached to a Drive Wire Server ) or Cassette Tape ( If you have a
> compatible cassette player or PC sound card ).
>
> Such a system would have the advantage of leaving the Cartridge Slot
> available.
>
> In summary Bank 0 = Access to the systems menu through
> [Ctrl][Alt][Reset] the menu lets you
> choose
> 0       to just do a normal reset.
> F       to access the READ ONLY utility menu for programing banks 1,2,3
> ... D,E
> 1 to E  14 programmable banks for whatever.
>
> Charlie
>
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