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- Path: sparky!uunet!mcsun!uknet!icdoc!rhbnc!csqx.cs.rhbnc.ac.uk!adrian
- From: adrian@csqx.cs.rhbnc.ac.uk (A Johnstone)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: DMA on PC
- Message-ID: <1992Jul21.163427.3153@csqx.cs.rhbnc.ac.uk>
- Date: 21 Jul 92 16:34:27 GMT
- Sender: news@csqx.cs.rhbnc.ac.uk (USENET News System)
- Reply-To: adrian@csqx.cs.rhbnc.ac.uk (A Johnstone)
- Organization: Dept of Comp Sci, Royal Holloway & Bedford New College Uni London
- Lines: 9
- Nntp-Posting-Host: csqx.cs.rhbnc.ac.uk
-
- I have a homebrew SCSI board based on the NCR 53C80 chip. I have it running
- happily under program control and would now like to speed things up by using DMA.
- Problem is I have so far been unable to bend the PC's DMA controller to my will.
- It is a complete non-starter, because the chip reports that it has reached
- terminal count before a single byte has been transferred. Can anybody point me in
- the direction of DMA applications that actually work? Almost anything on the
- subject of PC DMA would be useful at this stage.
-
- Adrian Johnstone, Department of Computer Scinece, RHBNC. adrian@cs.rhbnc.ac.uk
-