Re: Guru Meditation Exact Visual Specs

From: smf <smf_at_null.net>
Date: Thu, 11 Aug 2016 15:04:52 +0100
Message-ID: <7dfe9e9a-11c4-2df4-e6b5-2a92a63f27bc@null.net>
On 11/08/2016 12:42, Christian Euler wrote:
> The frame timing relies on the vertical blank counter by using 
> graphics.library/WaitTOF(). This means that the blinking speed is 
> different on a PAL or NTSC machine.
>
> Alerts are displayed on a default PAL (or NTSC) 2-colour hires screen 
> mode.

OCS chips couldn't switch between PAL and NTSC anyway, you were stuck 
with the default. Kickstart 1.3 didn't have code to switch between them 
either, although you could poke the registers to switch between them if 
you had ECS Agnus and Denise fitted.

The pixel aspect ratio wasn't square and NTSC & PAL are different 
anyway, while modern displays and printers generally have square pixels. 
So you will need to adjust for that.


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Received on 2016-08-11 15:00:03

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