Re: Omega Race Question

By the way, I just discovered this link which has data sheets on alot of
stuff including the TL08x

http://www.national.com/pf

I thought some of you might find this useful.

.....

I'll have to check the supply voltages again. ...and come to think of it,
I think I do have a nop fixture for the KK unit, but I believe it's for
the 6502. Maybe I'll try it out on my Battlezone.

Thanks,

Matt

_____________________________________________________________________

On Thu, 2 Sep 1999, John Robertson wrote:

> Typically the checksums in KK are generated with a NOP fixture for the CPU,
> then you start/stop the read on the chip select.
>
> As for the suspect TL08X, if you get no output, but you get input, have you
> checked the supply voltage for these devices? Have you scoped the inputs?
> It would be unlikely that both have failed unless the supply for them went
> ballistic and blew them together...
>
> John :-#)#
>
> At 04:18 PM 9/2/1999 -0700, you wrote:
> >I recently fixed an Omega Race board so that all the logic now works. The
> >game passes all the ram and rom tests and coins up. I think that I just
> >need to replace one or more of the TL08xCP Op Amps because I'm not getting
> >any X or Y signal. The X and Y pots are fine.
> >
> >Anyway - maybe someone could answer this question for me. I fixed this
> >game using my KK Test fixture. The instructions also include signatures
> >for certain roms but don't really explain the setup for getting the
> >signatures. Does anyone know how to do this? I'm just curious since it
> >might help me in the future.
> >
> >
> >Matt
>
>
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
> http://www.flippers.com
> "Old pinballers never die, they just flip out."
>
>
Received on Fri Sep 3 02:39:21 1999