re: Sidam Asterock wont coin up

Doesn't have a tilt or slam switch stuck?
On Oct 12, 2012 11:00 AM, <wboucher6@cogeco.ca> wrote:

> I don't have a schematic or experience with the game but I'll throw out a
> few ideas anyway. Apologies in advance for
> inapplicable ones.
>
> Some games are sensitive to coin drop timing. If you are triggering the
> coin switch manually, try emulating the pulse
> duration that you'd get using coins.
>
> Any chance that the number of coins required to get a credit is set to a
> high value, like 3 or 4? Maybe via dip
> switches.
>
> Some games remember the number of credits in a nvram or battery backed
> sram. If your game uses an nvram such as ER2055,
> maybe it's returning 0 after being written. I would assume that all sram
> would be tested by the self-test code but who
> knows.
>
> Some games have a setup screen where you can enable/disable up to three
> mechs. Any chance that it is just ignoring all
> of the mechs because they are set to off or none or something?
>
>
> Bill Boucher
> http://www.biltronix.com
>
> >
> > hi all..
> >
> > I have a really odd problem here with a Sidam Asterock pcb that just
> > wont coin up, let alone start.
> >
> > In test mode, i can activate the L and R coin switches and hear the
> > 'beep' verifying that the cpu can 'see' the coin switches being open and
> > closed. All other inputs also beep in test mode correctly.
> >
> > In my fluke 9100 i read the input port addresses and found that
> > 'Center Coin' was jammed on, this is an input to a mux'er that is left
> > floating on Asterock as the pcb only has inputs/tracking for Left and
> > Right coin inputs. When i tied this floating input to ground, the center
> > coin was no longer jammed on. All other inputs verify working on my
> > fluke completely normally (my test program is for Atari Asteroids) This
> > verifies the test mode operation in that the game can see/read all the
> > inputs correctly. Asterock test mode doesn't seem to care if this input
> > is floating or not. It wont coin up with this input tied or left
> floating..
> >
> > The game still refuses to coin up... Asterock has no 'free play' mode,
> > so unfortunately i can't just put it in freeplay mode and hit start...
> >
> > Does anyone have any insight into how the game code coins up? Is it
> > different to Asteroids? how can the test mdoe read the coin input but
> > not register credits in-game?
> >
> > help! :)
> >
> > --
> > Andrew Welburn
> > http://www.andys-arcade.com
> >
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Received on Fri Oct 12 16:16:07 2012