Re: Asteroids T/S

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 21:13:07 2009