RE: Testing Cinematronics CPU's

I'm not suggesting pulling all the of the monitor inputs the other way.
Just the MSB. That would result in the DAC putting out the middle value.
That should result in the beam being centered. Only issue is the spot
killer.

It's not just for diagnostics. If you power up a previously working game
but the board has died, the monitor won't have to go to the corner and
blow out. My AA just did that last week.

Brendan Keith
brendan.keith@wilcom.com

> ----------
> From: jwelser@ccwf.cc.utexas.edu[SMTP:jwelser@ccwf.cc.utexas.edu]
>
> > I've been wondering about making a small change to the monitor.
> > Namely, putting a pull-up (or is it pull-down) on the MSB of both DACs.
> > Is my theory sound?
>
> Pulling the inputs the other way would most likely deflect the
> beam to the opposite corner. I forget how the Cine Monitor gets its
> datqa (but I think Zonn covers it in his writeup.)
>
> Why not just unplug the power to the monitor when you're
> troubleshooting the board, rather than just unplugging the data cable?
>
>
Received on Thu Dec 31 11:22:35 1998