Path: utzoo!utgpu!attcan!uunet!lll-winken!snll-arpagw!paolucci
From: paolucci@snll-arpagw.UUCP (Sam Paolucci)
Newsgroups: comp.sys.amiga
Subject: Re: graphics chips ideas
Message-ID: <210@snll-arpagw.UUCP>
Date: 15 Aug 88 00:05:28 GMT
References: <0Wz-V=Au8k-083IFce@andrew.cmu.edu> <1515@pembina.UUCP> <208@snll-arpagw.UUCP> <2460@sugar.uu.net>
Reply-To: paolucci@snll-arpagw.UUCP (Sam Paolucci)
Organization: Sandia National Labs, Livermore
Lines: 31

In article <2460@sugar.uu.net> peter@sugar.uu.net (Peter da Silva) writes:
>In article ... paolucci@snll-arpagw.UUCP (Sam Paolucci) writes:
>> Having the capability of opening up transparent windows (and
>> transparent screens) would allow one to write a terminal program that
>> fully emulated some of the Tektronix 4100 and 4200 series terminal
>> which use two screens, one for graphics and one for alphanumeric
>> communication.
>
>Transparent screens are not possible with the current hardware architecture.
>
>Transparent windows are not necessary for this. Just open up one window in
>a DualPlayfield screen, and forge a couple of rastports: one to the top
>playfield (1 bit deep) and one to the bottom playfield (3 bits deep). This
>gives you 1 color text on top of 8 color graphics.

Unfortunately that will not do to get full emulation.  Especially for
the Tek 4200 series where >8 colors are necessary.

						-+= SAM =+-
(FILLER)
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-- 
					-+= SAM =+-
"the best things in life are free"

				ARPA: paolucci@snll-arpagw.llnl.gov