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Author Topic: Video slot or ZII slot for video card  (Read 4631 times)

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Offline Motormouth

Re: Video slot or ZII slot for video card
« on: April 01, 2017, 11:12:18 PM »
The two slots are not really comparable

Zorro II is an expansion slot with all access to system addressing and I/O
and the ability to do DMA bus mastering and autoconfig.

The reason that RTG card used Zorro II (or III) is because they are generating their own video signals

The Video Slot is really design to access the amiga's RGB, digital video signals, clock, and colorburst.  This really great for mixing amiga video with other video sources or for processing video or augmenting amiga video.

ie useful for genlocks, video toaster, flicker fixer.  It is not as useful in the days of ATSC DTV, HDTV etc.

The closest thing to a video card that I can remember for the Video slot was the Opalvision.
 

Offline Motormouth

Re: Video slot or ZII slot for video card
« Reply #1 on: April 02, 2017, 10:04:48 PM »
Quote from: mechy;824101
The Picasso IV($$$) could use both zorro2 slot and video slot,the video slot was used for its scandoubler/flicker fixer only. PicassoII etc will not use the video slot as Motormouth says.

@Mechy respectfully I suggest you reread the post.  I merely stated the differences in the slots ie zorro vs video slot for RTG.  I said that the video slot was not really appropriate for a RTG card.
Actually the only card I mentioned specifically was the Opalvision.  

PS I have owned a picasso II for over 20 years....
« Last Edit: April 02, 2017, 10:09:16 PM by Motormouth »
 

Offline Motormouth

Re: Video slot or ZII slot for video card
« Reply #2 on: April 04, 2017, 02:55:55 AM »
Quote from: Rotzloeffel;824122
This card would be the badest desicition ever ! Don“t buy it!

Buy a NEW Card.... such as the Picasso II-clone

http://webstore.kryoflux.com/catalog/product_info.php?products_id=56&osCsid=497da842e80aa2a0491c12b0d089de81

or the mnt VA 2000 with Full HD Support

http://shop.mntmn.com/


I like the idea of a Picasso II clone, it looks like this uses the Cirrus GD5434
I wonder where Matz got the supply of GD5434s, according to wikipedia it looks like is supports 64 bit memory transfers,
https://en.wikipedia.org/wiki/Cirrus_Logic

This would compare to the Cirrus Logic GD5428 what the picasso II+ uses
and the Cirrus Logic GD5426 what the picasso II uses.

The kyroflux website says 25% increase in speed, but in what test.  In real performance probably gives a modest but noticeable speed increase over the picasso II+.
I wonder if anyone has benchmarked it vs. the picasso II and II+ to see for sure.
« Last Edit: April 04, 2017, 03:09:00 AM by Motormouth »