Blitz (291/640)

From:Curt Esser
Date:5 Sep 99 at 11:35:39
Subject:Re: NTSC

Hi Vic

On 04-Sep-99, Vic E Babes wrote:
> Hello, NTSC users (probably Curt)
>
> Two questions:
>
> 1. When should I use the FORCEPAL/GOPAL command for a program that uses
> Blitz mode?

Right at the beginning would be best, I think.
>
> 2. Do I need to ensure that everything is computed before the vpos reaches
> 200, even when using Forcepal - in other words, I still only have 1/60th
> of a second each frame?

No, once you ForcePal it works just the same as on a PAL system.
The vblank rate becomes 50 - in other words, if it works on a PAL machine,
it will work the same on an NTSC machine forced into PAL mode...

The only catch is if the user's monitor can handle PAL modes - I don't think
it will work if the user has a TV instead of a real monitor...

Later...



OS/2 - half an operating system.

Yours electronically,
Curt Esser
camge@ix.netcom.com
http://members.xoom.com/Curt_Esser/

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