Re: R: R: [stella] PCMSG 2.4 (ok, I've had enough...)

Subject: Re: R: R: [stella] PCMSG 2.4 (ok, I've had enough...)
From: Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx (Eckhard Stolberg)
Date: Fri, 22 Aug 1997 15:52:28 +0200
>> Also make sure you get the new 2.0a version of PCAE. That one comes with
>> an improved PAL palette by me. :-)
>
>I'm using it (don't remember if it's the "a")... strangely, when PCAE is
>set to PAL I get green borders in my game, while on TV they're pink! Maybe
>I should ask to John Dullea...

That's the 2.0 version. The 2.0a was released yesterday. John has included
a better PAL palette with it, that I send him. Probably still not perfect,
but more acurate than the 'guessed' first one in version 2.0.

>I removed 1 line from the kernel in the NTSC mode and now the colors are
>back again on the PAL TV.
>So now my TV (and hopefully most of the others) can sync correctly, without
>losing color, to both PAL and NTSC modes.
>However, I think I won't drop the switch to PAL: on somebody's TV the trick
>could not work. What do you think?

It works on my TV now too, so the problem probably is fixed now. But if
you don't need the ROM space, you could leave the switch in. You'll never
know.

But that leaves the question, what the problem was.
What exectly do you mean by removing one line?
Do you use any timer loops in your game, that don't start and end with a
STA Wsync? 

>> However the screen ratio is different on PAL and NTSC. You can fit 228
>lines
>> on PAL in the same space that NTSC needs to display 192 lines. Therefore
>> NTSC graphics will always look a bit condensed on a PAL TV.
>
>hmmm... shouldn't it be the opposite?
>
>If 228 lines fill my PAL tv as well as 192, then the 192-lines NTSC image
>must be expanded, that is what I'm seeing in practice.

If you mean, that you must insert additional lines into NTSC images, in
order to make them have the same screen ratio on PAL TVs, then you are right.
:-)

On my TV 228 line images have a ratio of 4:3, while 192 line images have
a ratio of more like 16:9 with a black border above and under it.

Didn't you say, that you have a modern multiple standard TV. Maybe that
one automaticly blows up too small images?

>> As I said, very far fetched, but at least it explains all game elements.
>:-) 
>> I hope you like it anyway.
>
>I liked it very much :)

Thanks!
 
>> You could award bonus points for every chrystal, that has not been used
>> to destroy the satellite. Also you could award extra ships, if enough
>> points have been scored.
>
>There must be 20 bytes left, and I've already optimized the code a couple
>of times.
>These things, and many others, could find their place in a
>"Supercharger-enhanced" version of the game that I could write... when
>we'll know what's going on with the  Cyberpunk's projects ;)

I suppose removing the TV standard switch doesn't free enough space either,
so I'll have to wait for the enhanced version.


Ciao, Eckhard Stolberg


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