RE: Back to Bzone drawing on left side of monitor

Hmm, sounds like a project for Mr. O. Rubin... Is he on the list? Seeing as how he did the volcanoes, maybe he could fix them...
The reason I say it's not the math box is that I have an Asteroids Deluxe here doing the same thing - except on the Y axis. I've already ruled out dacs in my case and 99% positive its nothing after the dacs..

Best advice on the VSM seems to be start with the prom and work out from there. This is where a logic comparator such as the bug trap or HP comes in nice. Also check for broken traces.

JB

-----Original Message-----
From: owner-vectorlist@vectorlist.org [mailto:owner-vectorlist@vectorlist.org] On Behalf Of Christopher X. Candreva
Sent: Thursday, February 05, 2004 9:27 PM
To: vectorlist@vectorlist.org
Subject: RE: VECTOR: Back to Bzone drawing on left side of monitor

On Tue, 3 Feb 2004, Joe wrote:

> I would start poking around in the VSM.. probably something not counting
> properly... Could be a dac issue, but id find that unlikely..

Heh. VSM scares me, but I haven't really delved into one yet.

Here's an interesting thing. In the pictures and video I put up, I mention
how part of the mountans on that left side will disappear to the edge, and
reappear as it pans over.

This, apparently, is normal. I just confirmed that part of the behavior in
MAME. However, in MAME it's a very narrow band.

It's interesting to see, and most obvious if you put either the moon or
volcano at the left edge. Two 'tiles' join right in the center of the
volcano, so as you pan the volcano off the left edge, half will just
disappear before it actually reache3s the edge.

It's almost like the background is put up in 'tiles' that are normaly
clipped at the X boundary, but on my machine it doesn't clip the tile, you
always see the whole tile as it slides over.

Hmm -- it's not JUST the mountains either. In the second to last picture I
put up, you can see a cube being drawn on the side of the monitor too.

==========================================================
Chris Candreva -- chris@westnet.com -- (914) 967-7816
WestNet Internet Services of Westchester
http://www.westnet.com/
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