???
Scott C., have you not seen that Scott B. (who is the same Scott
Brasington as below) has an almost finished Lunar
Lander/Asteroids/Asteroids deluxe multigame that is in it's last stages
of beta testing?
tm
Scott Caldwell wrote:
> Scott, those adaptors like interesting. I'd also like to play Asteroids
> in my
> AD cabaret cabinet. :)
>
> I've been holding onto this Asteroids PCB thinking Clay will some day
> complete
> his promised A/AD/LL multi-game.
>
> Scott C.
>
> Scott Brasington wrote:
>
>> Pins 19 (X) and 16 (Y) control video inversion. There is no
>> way to control them via software unless you want to mod the
>> board. Asteroids only uses pin 19 to invert *BOTH* X and Y.
>> Very early asteroids boards did not have any video inversion support.
>> Cocktail is implemented by looping back the P2out signal which is
>> tied to the Bank RAMSEL circuit when Player 2 is active.
>> DLX upright mirror cabinet will ground pin 19 (X), which has the
>> affect of inverting both X and Y when an asteroids board is plugged
>> in to a DLX upright mirror cabinet (which leaves it with
>> the Y backwards in reference to the mirror). Hope that helps.
>>
>> FWIW, I ran some proto adapters a few weeks ago that are
>> pure plug and play for ast/dlx including video inversion
>> circuit, audio amp impedance matching (AR vs. ARI/II), and
>> input signals swapped. I have not had anytime to test
>> out the audio stuff yet, but the X flip and input swaps
>> works fine. I myself have only a DLX cabinet and having
>> a plug and play way to change boards will be a great helper.
>> Now that I'm back from vacation hopefully I'll have some
>> time to catch up on arcade things again. My kids are wearing
>> me out, glad they will be returning to school!
>>
>> -Scott
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Received on Tue Apr 4 09:50:04 2006
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