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From: daemon@rutgers.UUCP
Newsgroups: comp.sys.cbm
Subject: re: why C128 RGBI to monochrome converter!!!
Message-ID: <1161@rutgers.RUTGERS.EDU>
Date: Thu, 12-Mar-87 12:53:02 EST
Article-I.D.: rutgers.1161
Posted: Thu Mar 12 12:53:02 1987
Date-Received: Fri, 13-Mar-87 20:52:08 EST
Sender: daemon@rutgers.RUTGERS.EDU
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From: prindle@NADC

The monochrome signal out of the 128 (80 column display) displays only 3 levels
of intensity: black if the color is black, white if the color is any color
other than black and the intensity (I) bit is high, and something in-between
(grey) if the color is not black and the intensity (I) bit is low.  Thus, with
this monochrome output, a light-red text on a light-green background will be
invisible!  With the RGBI to monochrome converter I designed, 16 levels of
intensity are produced on the monochrome monitor, each corresponding to a
different color - thus a light-red text on a light-green background, for
example, will be perfectly visible.  It greatly enhances programs (such as
Paperback Writer/Pocket Writer II) which use subtle color differences to outline
different portions of a menu and to highlight selections.  It also helps where
color (not intensity) differences are used to by editors to separate a command/
status line from the text lines.  Hope this clears things up - yes you can
live with just a cable, but once in a while, the 16 grey level output is a
great improvement.

Sincerely,
Frank Prindle
Prindle@NADC.arpa