X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f
X-Recipient: djgpp AT delorie DOT com
From: "Gerrit van Niekerk" <gerritvn AT gpvno DOT co DOT za>
Organization: GPvNO
To: djgpp AT delorie DOT com
Date: Mon, 21 Jan 2008 20:56:26 +0200
MIME-Version: 1.0
Subject: Re: BIOSCOM
Message-ID: <479506FA.27003.C68BE66@gerritvn.gpvno.co.za>
In-reply-to: <4794F70D.26311.C2A8969@gerritvn.gpvno.co.za>
References: <200801202022 DOT m0KKMLg0001310 AT delorie DOT com>, <web-50952972 AT controller DOT cgpmail DOT ua DOT pt>, <4794F70D DOT 26311 DOT C2A8969 AT gerritvn DOT gpvno DOT co DOT za>
X-mailer: Pegasus Mail for Windows (4.41)
Content-type: text/plain; charset=US-ASCII
Content-transfer-encoding: 7BIT
Content-description: Mail message body
Reply-To: djgpp AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

On 21 Jan 2008 at 19:48, Gerrit van Niekerk wrote:
> > > To get higher speeds, you need hardware-specific code.
> > Huumm... Hyperterminal is no hardware-specific and does it 
> > very well at 57600!
> BIOSCOM as the name says, uses the BIOS functions which are simple polling functions. You will be 
> lucky to receive reliably even at 9600 baud. For higher speeds you need to use interrupts and need 
> an ISR, perhaps even a dual Protected Mode/Real Mode one.

For an example, download the GDB source code and look at gdb/ser-go32.c
-- 
Gerrit van Niekerk
GP van Niekerk Ondernemings BK
Roosstraat 211, Meyerspark, 0184, South Africa
Tel: +27(12)8036501 Fax SA: 0866 413 555
Cell: +27(73)6891370
Fax Int'l: +1(206)2034139
Email: gerritvn AT gpvno DOT co DOT za
Web: http://www.gpvno.co.za