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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: <3073@sdcsvax.UCSD.EDU>
Date: Fri, 1-May-87 13:52:13 EDT
Article-I.D.: sdcsvax.3073
Posted: Fri May  1 13:52:13 1987
Date-Received: Sun, 3-May-87 03:29:28 EDT
References: <500@titan.camcon.co.uk> <3062@sdcsvax.UCSD.EDU> <1794@cbmvax.cbmvax.cbm.UUCP>
Reply-To: hutch@sdcsvax.UCSD.EDU (Jim Hutchison)
Organization: UCSD EMU Project (Educational Microcomputer Unix)
Lines: 21
Keywords: Kill this subject quick
Xref: mnetor comp.sys.amiga:4402 comp.graphics:590

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
Disklame'r:
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