Re: Undocumented board difference on Asteroids/Asteroids Deluxe?

It looks like they are "close". Both just try to sink the LEDs to GND to
activate them.

- Check your adapter to make sure the "8" resistance is 0. Including
  checking the pins. Put the adapter on your board and check from the
  resistor (on 8) all the way through to the wiring harness.

- Disconnect 6 (P2 sink) and see if P1 now works

- Check that the 2 current limit resistors (in series with 6 and 8) are
  the same values (with a meter and the edge connector disconnected).

(at least that's where I'd start)

Kurt

On Wed, Oct 20, 2004 at 10:40:55AM -0500, joemagiera wrote:
> Messing around trying to run an Asteroids board in an Asteroids Deluxe
> upright cabinet. I solved the orientation problem caused by the mirroring
> of the monitor by swapping the appropriate yoke wires on the monitor.
>
> Now all I have to do is account for the board pinout differences. I've
> tried two ways. First I used the ROM hack (I think it was by Matt in TX?).
> Set game on free play. All works except the Player 1 LED doesn't flash.
> The button works, it just doesn't blink. Hmmmm...
>
> Okay, so I ditch that board and just do it the old fashioned way, I make an
> adapter, swapping pinouts for 12/N, 13/P and 15/S. Game still set on free
> play. All works again, except Player 1 LED not flashing. Same thing,
> button works, just doesn't blink.
>
> I've checked continuity every which way, from the light to the board itself,
> no problems. I checked for shorts/crosses in the adapter, no problems.
>
> Acording to the schematics for both games, the pins involved for player 1
> LED are the same, Y and 8.
>
> I tried an Asteroids Deluxe board and the Player 1 LED is indeed working. I
> put the adapter on the AD board, and no player 1 LED blink. Sounds like the
> adapter. But it can't be. Both pin Y and 8 are straight through and
> continuity is fine from the LED all the way to the board on both pins
> (including through/across the adapters). Further it can't be the adapter
> because the ROM hack solution doesn't work either. Just to be sure, I made
> another adapter, and same problem.
>
> One other point, I tried both an Asteroids Audio/Reg and an Asteroids Deluxe
> Audio/Reg board on all the combinations mentioned above with no difference.
> Any ideas anyone? Can there be some undocumented difference somewhere on
> the boards? If anyone has done this hack, do you recall or can you check if
> the player 1 LED is blinking? Sorry for the long email on a small problem.
> Thanks,
>
> Joe
> joemagiera@ameritech.net
>
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-- 
/**
 * Kurt Mahan   kmahan@xmission.com
 *
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