Re: [stella] And now, something completely different... JAMMED v0.1

Subject: Re: [stella] And now, something completely different... JAMMED v0.1
From: "Thomas Jentzsch" <tjentzsch@xxxxxx>
Date: Tue, 20 Feb 2001 18:02:25 +0100
Eckhard Stolberg wrote:
> The new version still jumps when the level gets changed. You could probably
> set up a TIM1024 timer that is long enough for the worst case in the
> decompression routine. The routine that waits for the timer to expire can
> then fill up the frame with the nessessary number of blank scanlines. That
> would get you a stable screen and a constand blanking period for loading
> new levels. 

I don't understand, what do you mean with "nessessary number of blank lines"? Decompressing random levels can take up to about 30 frames. So the TV won't get any VSYNC during that time. How could your suggestion work?

> Maybe you could set up a shorter timer period for the case
> where the user is going through the levels one by one, as this probably
> takes less time than decoding a random level.

Here I'll miss again a least one VSYNC (overscan time ~2500 cycles vs. decompression time ~7000 cycles). Same problem, isn't it?

Are there any other games (except Chess) which are blanking the screen for longer times to do something very complex?

> BTW seem to be using adresses $fff8 and $fff9 in your game. This
> prevents the program from being able to run on the supercharger.
> Maybe you'd like to change that, if possible.

Already done!

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

1.000.000 DM gewinnen - kostenlos tippen -
IhrName@xxxxxx, 8MB Speicher, Verschluesselung -

Archives (includes files) at
Unsub & more at

Current Thread