RE: Major Havoc clicking

These trace wires are definitely not causing the clicking sounds, although they may stop you from seeing a picture when you fix the clicking problem. As far as OEM wires being crap, I think you are referring to the zero ohm resistors (aka jumpers) that are frequently found on monitor boards (they look like staples).

As far as the clicking, this is a sign of the game resetting constantly. Disable the watchdog and see if you see anything on the screen. This is easily caused by problems in the vector generator (ram, AVG, you name it). You can verify this by stopping the CPU from waiting on the vector generator.. This should let you play blind.

If the board was shipped working, it could be a problem with RAM, bad sockets, or dirty legs on IC's (or practically anything else :). Try pulling the socketed chips and cleaning their legs. Also, make sure you have a clean +5 volts. The board may work but you could have a bad big blue.

Jon

At 10:32 AM 10/16/2000 -0400, you wrote:

>Sorry, but they probably AREN'T your problem. Those jumpers just route the
>pre-amplified X & Y signals (IIRC) to the edge connecter so the Major
>Havoc->Tempest/Space Duel/Gravitar/etc. adapter board can un-bow (or bow?)
>the signal to display properly on a WG vector monitor. Since I didn't have
>the adapter board, I just removed the jumper wires and play it on my Space
>Duel and can't say I notice any difference in the display, but I'm not a
>purist.
>
>The quad Pokey was basically 4 Pokey chips in one package. They either
>couldn't get them done in time or couldn't make enough of them so they had
>to make the daughter board with 4 Pokeys and named it...
>
>You might want to try:
>http://www.gamearchive.com/video/manufacturer/atari/vector/html/major_havoc.html
>
>HTH
>
>
>
>
>
> "Bret Pehrson"
> <bret@infowest.com> To: <vectorlist@synthcom.com>
> Sent by: cc:
> owner-vectorlist@sy Subject: RE: VECTOR: Major Havoc clicking
> nthcom.com
>
>
> 10/15/2000 10:32 PM
> Please respond to
> vectorlist
>
>
>
>
>
>
>Well, I spent a little time w/ my boards, and I think that I've found the
>problem. There are two jumper wires on the PCB, and both are broken, I
>guess both were shaken loose in shipping...
>
>Anyway, I'd just like to make sure that I resolder the wires in the correct
>place (the ends could conceivably be interchanged). Here is what I'm
>assuming:
>
>Jumper 1:
>IC 12D pin 7 to connector pad #11 (M)
>
>Jumper 2:
>IC 12 A/B pin 7 to connector pad #12 (N)
>
>Can anyone confirm this and/or point me to documentation regarding these
>jumper wires. Further, if I recall correctly, OEM jumper-wire is crap and
>should be replaced anyway???
>
>Also, on the PCB is a "Quad Pokey Eliminator" daughter board... Again, any
>info/docs regarding this element?
>
>
>
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Received on Mon Oct 16 11:31:30 2000