Re: What monitor is in an original Japanese Taito Asteroids cocktail?

From: Marc Alexander <marcwolf123_at_yahoo.com>
Date: Sun Mar 31 2002 - 07:26:47 EST

----- Original Message -----
From: "Phil Morris" <phil@morris0.fsnet.co.uk>
>
> >But the (Atari) Asteroids pinout on spies has no INV Y.
> As far as I'm aware, in this case only Asteroids Deluxe will need/use INV Y
> due to the position of the monitor as it uses a mirror.

Ah, ok. This Taito Asteroids cocktail controls INV X and INV Y I think, to flip the
monitor around for the player on the other side when in 2 player mode.

It also has another logic board, which switches over between the player 1 and 2
control panels. I discovered this when checking the inputs at the game board
connector, when powered off, no short to ground on any button presses except
player 1 or 2 start. Then I figured out what it was doing.

Does anyone know if an Atari Asteroids has an undocumented INV Y on it?
I'd like to put Asteroids back in it when I get a board to suit, and
was wondering if it has an INV Y input I can use without modding the board.

> >I just looked at the
> >Atari Asteroids schematics and INV X and INV Y are not shown.
>
> On an Asteroids board, INV X corresponds to pin 19.
>
> On Asteroids Deluxe, INV Y is on pin 16.

Ok, thanks,

Cheers,

Marc

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Received on Sun Mar 31 04:31:55 2002

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