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From: hutch@sdcsvax.UCSD.EDU (Jim Hutchison)
Newsgroups: comp.sys.amiga,comp.graphics
Subject: Re: PC2 Graphics beats Amiga
Message-ID: <1130@hal9000.UUCP>
Date: Mon, 4-May-87 14:40:41 EDT
Article-I.D.: hal9000.1130
Posted: Mon May  4 14:40:41 1987
Date-Received: Tue, 5-May-87 04:45:44 EDT
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Xref: mnetor comp.sys.amiga:4471 comp.graphics:605

In article <1794@cbmvax.cbm.UUCP> grr@cbmvax.UUCP (George Robbins) writes (<)
In article <3062@sdcsvax.UCSD.EDU> I (Jim Hutchison) wrote (>):
>[On the PC2 displaying at 70Hz]  Why 70 Hz, 65 would be very
>stable, and they could use the rest of the bandwidth for something useful
>like blitting.

<	Uh, they use shift-register "video" rams which means bandwidth is
<	not a real issue.  This is pretty easy on the simplistic display
<	model that IBM implements.

You can still do processing on the contents of the shift-register.  Not
permanent block transfers, more like inserted block transfers.  Just insert
the little devil into the output stream.  Is this a silly way to handle such
things?  Sounds like a fine way to do live video overlay, but I could be
quite confused.

-- 
    Jim Hutchison   		UUCP:	{dcdwest,ucbvax}!sdcsvax!hutch
		    		ARPA:	Hutch@sdcsvax.ucsd.edu
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