Re: Asterock anyone ?

Hi André, thanks for starting the thread here.

Hi Marco & All, I am the guy working on that Asterock board.

@Marco : If 'x = irrelevant' and the order of switches is 1 - 8, then yes, I
have had all switches set to ON (confirmed by test screen).

What is really irritating that I can even read the coin inputs with the fluke
at addresses $2400 and $2402 by bit7 changing from 0 to 1. Also as André stated,
there are beeps being heard for each switch in test mode. As the next step I did a
full signature test on all ROMS with the Fluke which came up with no errors against
the MAME ROMs' signatures; a set of newly burned 2708s didn't change the issue either;
long RAM test was also fine for work & vector RAM.

It just doesn't recognize the coins in normal game mode.

For all who do not know Asterock by SIDAM, its an Asteroids clone. For all inputs
from outside the PCB, the switches are n.o. and when closing, are NOT closing to GND
like in Asteroids, but rather feeding +23 volts to the PCB, which on the PCB is divided
by a resistor chain making +5 V fed to the input chip. So the inputs are active high,
which means some code changes obviously vs the original Asteroids code.

Hope this adds a little bit of information.

We haven't tried the board in André's Asterock Machine yet, as this would mean
shipping and moving it away from my test bench, so we want to do this only as a last
resort.

Best Regards,
Andreas

"vernimark" <vernimark@vernimark.com> schrieb:
> hi andre, I'll forwad you email to a friend of mine that knows quite well
> how asterock works.
> I have an asterock pcb too, but I don't know what to say you.
> Anyway are you sure DIP SWITCH are in correct position? Try X X X X X ON ON
> ON
> regards,
> marco
>
> -----Messaggio originale-----
> Da: owner-vectorlist@vectorlist.org
> [mailto:owner-vectorlist@vectorlist.org]Per conto di Andre Huijts
> Inviato: giovedi 3 dicembre 2009 0.15
> A: vectorlist@vectorlist.org
> Oggetto: VECTOR: Asterock anyone ?
>
>
> Has anyone ever worked on an Asterock PCB ? Or maybe the MAME emulation ?
>
> I've got a machine, and Andreas (he's on this list too) was kind enough to
> have a go at fixing the PCB which succeeded, except he can't get the game
> credited.
> He checked all the inputs on the test screen, works fine. Slam-switch not
> stuck high.
>
> Any tip
> appreciated.----------------------------------------------------------------
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>
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Received on Thu Dec 3 02:45:51 2009