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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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