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- Path: sparky!uunet!bonnie.concordia.ca!IRO.UMontreal.CA!matrox!matrox.com!imagine.matrox.com!mlord
- From: mlord@imagine.matrox.com (Martin Lord)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: EISA DMA SPEED on vrious systems
- Summary: EISA DMA C type is shit on most computers! !@$%@#$%^$&%^
- Keywords: DMA EISA
- Message-ID: <1992Aug21.171718.7224@pandora.matrox.com>
- Date: 21 Aug 92 17:17:18 GMT
- Sender: news@pandora.matrox.com (Usenet Administration)
- Distribution: na
- Organization: Matrox Ltd.
- Lines: 18
-
-
- We are trying to design a C type HW DMA device. Prior to do this,
- we tested this kind on transfers on some machines. Results should fly
- around 30 Mb/s: here are the results:
-
- ALR 486 33Mhz: 17Mb/s
- INTEL 486 50MHz: 7Mb/s
-
- It works fine, but speed is quite LOW. Does somebody
- has experience with C typpe DMA on EISA buses?
-
- ------------------------------------------------------------------------------
- | Martin Lord, software eng. Matrox Electronic Systems, Imaging group. |
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- | internet: Martin.Lord@matrox.com | Space reserved for next revision. |
- | Voice (514) 685-7230 (2466) | |
- | Fax: (514) 685-2853 | |
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