Re: Mr Do Castle flipping

Hi Mark,

If there is a "Flip" hardware circuit in the game schematics
(cocktail mode flip logic existed in Lady Bug I recall) then you
could, perhaps, add a 74LS86 in series with the "Flip" control line.
You can invert the output of the 86 by a simple toggle switch. The
control line is controlled by the toggle switch to either go to Vcc
or Common. Best to pull up to Vcc with a 3K6 resistor! If you have a
copy of Lancaster's TTL COOKBOOK it covers this and other tricks of
TTL.

Otherwise you have to do a software hack, and short of using the code
from MAME I don't know what the solution is there - involved I
suspect if MAME hasn't done the inversion...

John :-#)#

At 6:34 PM -0400 4/24/06, Mark E Davidson wrote:
>Anyone out there, smarter then me (which is everyone reading this), know
>if there is a hardware or software hack to rotate the screen of Mr Do's
>castle so that I can play it in a Jamma machine? Im aware of the
>software hack for the original Mr Do but cant find an answer to flipping
>MDC. :-(
>
>Thanks in advance
>-=Mark=-
>
>
>

-- 
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                  www.flippers.com
"Old pinballers never die, they just flip out"
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