Re: NEWSFLASH! Linux ported to Commodore VIC-20!!

H. Peter Anvin (hpa@transmeta.com)
14 Sep 1998 19:46:02 GMT

Followup to: <Pine.LNX.3.96.980914120636.10637O-100000@waste.org>
By author: Oliver Xymoron <oxymoron@waste.org>
In newsgroup: linux.dev.kernel
>
> On 14 Sep 1998, Anders Melchiorsen wrote:
>
> > So a 4 hour video tape could carry like 60MB if your data is correct.
>
> If you only use the audio tracks. With a VGA-to-NTSC converter and a
> framegrabber, you could up this number quite a bit. Assuming only
> 320x200x8 resolution, grabbing only 15 frames a sec (below even VHS
> quality), that's 64k/frame*15frames/sec*3600sec/hour=~ 3.5G/hour. Of
> course, for the cost of a decent framegrabber, genlock, and VCR, you could
> buy a good tape drive..
>

There is no way you're going to get enough quality on NTSC to
distinguish that many pixels reliably. Especially not recorded on
VHS... But there *are* fairly cheap off-the-shelf devices that use
VHS tape recorders as data storage media; they were popular in the
early 90's.

-hpa

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