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From: "Mr. Giark To You" <joehick@golden.net>
To: AMOS List <amos-list@access.digex.net>
Date: Fri, 10 Jan 1997 09:03:46 -0500
Message-ID: <yam6949.2340.4745520@pop.golden.net>
X-Mailer: YAM 1.3.3 - Amiga Mailer by Marcel Beck
Subject: Re: A few bits 'n' pieces
MIME-Version: 1.0
Content-Type: text/plain
Status: RO
X-Status:
On 09-Jan-97, Eric Hyland wrote:
>Mr. Giark wrote
>that you need to adjust the timing. I do not think it is necessary to
>adjust the timing in all cases, because some games like Q-Bic & Bloodfest
>seam to run just fine in NTSC the only problem with those games is that you
>cant see the bottom of the screen. As for the ___,200 screen mode this is
>also probably not necessary to as the Amiga is not a stinking PC, and dos
>not need ugly black borders. The Amiga has the ability to run in OVERSCAN
>screen modes and Amos screen are OVERSCAN screens, so to get your game to
>run on a NTSC Amiga why not do what the people who wrote Guardian for the
>CD32 did which is to let the NTSC user move the PAL screen to the top of
>the PAL OVERSCAN area. To do this use the ( Screen Display number,x,y,
>width,height ) command increasing y lowers the screen decreasing y raises
>the screen y normally is 40. NTSC OVERSCAN is ___,241
There are two problems with that. First, on NTSC machines, y is 50, not 40.
Second, maximum overscan that AMOS will show is 234. (My wb screen is
overscanned to 241 (482 interlace actually), but AMOS won't go that far. To
show the maximum possible height on NTSC, you need to do the following:
Screen Open 1,640,234,16,Hires
Screen Display 1,128,26,640,234
I've experimented a lot with this and that's the maximum I can get on the
screen. BUT!
Why not add a couple lines to your PAL program that offers NTSC users the
ability to switch modes? It only takes a couple lines of code and anyone with
