From:	Martynas Kunigelis <martynas AT nm3 DOT ktu DOT lt>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Geting 8x8 text from rom?
Date:	Mon, 15 Dec 1997 13:52:33 +0200
Organization:	LITNET
Lines:	23
Message-ID:	<34951A01.5C6864E3@nm3.ktu.lt>
References:	<34938c5f DOT 0 AT pusher DOT student DOT adelaide DOT edu DOT au>
NNTP-Posting-Host:	slibinas.nm3.ktu.lt
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Matthew wrote:
> 
> Im rather new to DJGPP so please excuse my ignorance here
> 
> I would like to know how I would use farnspeekb for the following address.
> 0xF000FA6E which contains the 8x8 font for mode 13h in rom. The only
  ^^^^^^^^^^

Wrong! It's F000:FA6E in 8086 segmented addressing notation. Please
note, that this is _very_ different from 0xF000FA6E. The linear address
for F000:FA6E is 0xFFA6E.

> example close to farnspeekb I can find is for writing to the screen
> ie  _farnspokeb(0xA0000 + line_offset, color);
> Im used to writing 0xA0000000 for the screen address!

How so? The VGA framebuffer is at A000:0000, while 0xA0000000 is 
somewhere above 2GB in the address space!

> How do I write the adress 0xF000FA6E for use with farnspeekb?
You write F000:FA6E as 0xFFA6E.

Martynas

- Raw text -