From:	Peter Schwalbach <ps AT ind DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Fast Access Memory Mapped Device ?
Date:	Wed, 16 Jul 1997 16:30:39 +0200
Organization:	Aachen University of Technology / Rechnerbetrieb Informatik
Lines:	20
Message-ID:	<33CCDB0E.BFFE8E4@ind.rwth-aachen.de>
NNTP-Posting-Host:	137.226.110.228
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi,

I need to transfer 32bit words from a memory mapped device (dual ported
RAM of DSP on the ISA-Bus), compute and sent them back. I have solved it
with the farpeek und farnspeek funktions which are working were well.

I can only use small buffers because I want to have realtime I/O.
Could I increase the I/O performance using DMA or the dosmemget
funktions with small buffers (about 128 -256 words)?

Thanks for any suggestions

Peter

 
-- 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 Peter Schwalbach   EMAIL: Peter DOT Schwalbach AT post DOT rwth-aachen DOT de (dialup) 
 Hasslerstrasse 7          ps AT ind DOT rwth-aachen DOT de (Institut)   
 D-52066 Aachen	    Tel.:  0241/534918  Hochschulnetz: 6978

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