Re: [stella] How did Activision black out the "comb" effect?

Subject: Re: [stella] How did Activision black out the "comb" effect?
From: Thomas Jentzsch <tjentzsch@xxxxxx>
Date: Sat, 1 Jun 2002 14:30:59 +0200
At 01.06.2002, 12:53, Dennis Debro wrote:
> Activision blacks out the "comb" effect when they reposition sprites.
> How do they do that? Do they time the write of the background color to
> show black on the left and then once they're pass the "black comb" start
> outputting the scanline's background color? Can someone point me to an
> example?

Look at my disassemblies of Pitfall! and River Raid. In those games they
write to HMOVE in *every* line of the kernel.

Or as we would say in Germany: "You don't see the trees between nothing
but wood." :-)

Have fun!
Thomas Jentzsch         | *** Every bit is sacred ! ***
tjentzsch at web dot de |

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