Re: Asteroids T/S

Well like I said, I'm note 100% sure what I'm doing. As for the SA, I have
more than 1 board I'm working on, so it would be nice to know how to do for
other failures. If I have to T/S address lines etc.

As for the Vrom 5000-57ff, and the Vram 4000-47ff both those check good with
the fluke.

What is the DVG test?

Kevin

2009/12/20 Mark Shostak <shostakmark@gmail.com>

> Kevin,
>
> What are you trying to accomplish at this point with SA?
>
> You specified you test the roms and ram, but not the vroms and vram.
>
> You might continue by:
> - Testing the VROM sigs (in circuit w/ Fluke)
> - Testing the VRAM
> - Running the DVG test
>
> -Mark
>
>
> 2009/12/20 Kevin Moore <talon.k@gmail.com>
>
> Well after comparing some Tempest Info with Peter's Asteroids SA document,
>> It shouldn't be all that different. Ground the WGDIS, but typically on the
>> games I've run SA on, you tie Φ0, and Φ2 together. I'm not finding Φ0. Do
>> they need to be tied together on Asteroids, and if so, I'm not finding Φ0 on
>> the schematics as of yet.
>>
>> Thanks,
>> Kevin
>>
>> **
>>
>> On Sun, Dec 20, 2009 at 1:48 PM, Kevin Moore <talon.k@gmail.com> wrote:
>>
>>> I'm also looking for a catbox guide for Asteroids. I found the HP
>>> version, but I'm guessing the setup may be a bit different.
>>>
>>> Thanks,
>>> Kevin
>>>
>>>
>>>
>>> On Sun, Dec 20, 2009 at 12:04 PM, Kevin Moore <talon.k@gmail.com> wrote:
>>>
>>>> OK so I'm working on an Asteroids board.
>>>> I'm still pretty new at this and learning more each day, but I would
>>>> like some feedback/help/teaching on what I'm doing sofar
>>>>
>>>> First thing I do is check voltages. Good
>>>> Next I pull all the Roms, and Check Good
>>>> Then I use a Fluke 9010 to check the fluke sigs on the roms. Good
>>>> I did do a Ram test from 3000-4000, with the fluke, I'm not sure if I
>>>> this is testing all of the ram or not. But that area did check good.
>>>> Put board in test mode, everything looks good, no beeps no errors.
>>>> Put the board in game mode, get fast blink, and watchdog barking
>>>> GND watchdog dis, No go.
>>>> I pull pin 1 of L6 DMAGO watchdog still barking.
>>>> So now it's down to MPU problem, and maybe VSM right?
>>>>
>>>> Ionpool has listed the following for MPU problems
>>>> Check the ROMS, RAM and especially the 74LS245 (or AM83048) at E2 (E3 on
>>>> Asteroids).
>>>> Well I know the roms are good, and I'm not getting beeps in test mode
>>>> for Ram, and it appears everything that should be toggling on the AM83048 is
>>>> toggling.
>>>>
>>>> But shouldn't using the fluke to run sigs on the roms eliminate the
>>>> problems with the bus transceiver at E3?
>>>>
>>>> That would mean that the problem lies in the VSM right?
>>>>
>>>> So now I'm to the point where I'm asking for some assistance.
>>>>
>>>> Thanks,
>>>>
>>>> Kevin
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>
>

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Received on Sun Dec 20 21:48:59 2009