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From: | jp_prongs AT yahoo DOT com (Nick) |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Thoughts on physical address and DMA |
Date: | 17 Aug 2001 15:12:58 -0700 |
Organization: | http://groups.google.com/ |
Lines: | 4 |
Message-ID: | <f5c79439.0108171412.689b2a6b@posting.google.com> |
NNTP-Posting-Host: | 165.247.137.108 |
X-Trace: | posting.google.com 998086379 10311 127.0.0.1 (17 Aug 2001 22:12:59 GMT) |
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NNTP-Posting-Date: | 17 Aug 2001 22:12:59 GMT |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Since you add `__djgpp_conventional_base' to a physical address to convert it to a linear address, could you possibly _subtract_ it from a linear address to convert it to a physical address? If so, could the physical address be used for DMA?
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