Re: Fonts for Hercules

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#7273

From: Ping-Shun Huang
Date: Sun, 23 Jun 1991 20:13

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In article <3441@ria.ccs.uwo.ca> pruss@ria.ccs.uwo.ca (Alexander Pruss) writes:

 > Can you load a different font into a Hercules compatible display
 > adaptor?  (Without any hardware modifications.)  If so, how?

The basic Hercules monochrome graphics board (not the InColor board or
the RAM____ [sp?] boards or the Workstation Graphics Card) does not
provide hardware support for fonts, as EGA and VGA standards do.  As is
possible with any bit-addressable graphics device, the application can
implement any font it wants in software...  The table which tells the
board how to represent each ASCII character in display memory with bit
patterns is hard-coded in ROM, and there is no provision to change the
address of this table.  You can, however, read this table so that your
software can use it to display characters in graphics mode which look
very much like the characters in text mode.

--
Above text where applicable is (c) Copyleft 1991, all rights deserved by:
UNIX:/etc/ping instantiated (Ping Huang) [INTERNET: pshuang@athena.mit.edu]

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From: pshuang@athena.mit.edu (Ping-Shun Huang)
Subject: Re: Fonts for Hercules
In-Reply-To: pruss@ria.ccs.uwo.ca's message of 21 Jun 91 22:08:50 GMT
Message-ID: <PSHUANG.91Jun23161334@beeblebrox.mit.edu>
Sender: news@athena.mit.edu (News system)
Organization: Massachusetts Institute of Technology
References: <3441@ria.ccs.uwo.ca>
Date: Sun, 23 Jun 91 20:13:40 GMT
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