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Author Topic: Why is NTSC Amiga 500+ so hard to find?  (Read 8719 times)

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Offline desiv

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Re: Why is NTSC Amiga 500+ so hard to find?
« on: July 08, 2012, 08:37:24 PM »
Follow up Super Denise question..

From Wikipedia (the font of all knowledge.. ;-) :
Quote
The ECS Denise chip offers Productivity (640×480 non-interlaced) and SuperHires  (1280×200 or 1280×256) display modes (also available in interlaced  mode), which are however limited to only 4 on-screen colors.  Essentially, a 35 ns  pixel mode was added plus the ability to run arbitrary horizontal and  vertical scan rates. This made other display modes possible, but only  the aforementioned modes were supported originally out of the box. For  example, the Linux Amiga framebuffer device driver allows the use of  several other display modes. Other improvements were the ability of the  blitter to copy regions larger than 1024×1024 pixels in one operation  and the ability to display sprites in border regions (outside of any  display window where bitplanes are shown). ECS also allows software  switching between NTSC and PAL video modes.
So, Super Denise gave us Productivity and SuperHires...

Is it also required for PAL/NTSC switching?  Or will Kickstart 2 (and the Super Agnus?) allow that?

I've got the DKB Megachip and 2M CHIP now in my A500, and Kickstart 2 is on its way..
(yes, 2.x.  My A1000 has 1.x and my A1200 has 3.x, so it just made sense.. ;-)

I don't think I'd ever need Productivity/Superhires on my A500, but PAL switching would be nice..

desiv
(to be fair, the Wikipedia article is about ECS, not just Denise.  So they aren't saying that Denise is required for PAL/NTSC switching, just ECS..  I'm just not sure if Agnus and Denise are both required.)
Amiga 1200 w/ ACA1230/28 - 4G CF, MAS Player, ext floppy, and 1084S.
Amiga 500 w/ 2M CHIP and 8M FAST RAM, DCTV, AEHD floppy, and 1084S.
Amiga 1000 w/ 4M FAST RAM, DUAL CF hard drives, external floppy.