Date: Wed, 29 Jul 2009 15:11:03 +0200 From: Benoit.LEBLANC@fr.thalesgroup.com To: doc@FreeBSD.org Subject: Question about DMA Message-ID: <BFF6723B062BFF40B4B7A6CF670160B4016CAF42@argos2.clb.tcfr.thales>
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Mister, I read your article about DMA since I have to use a 8237 DMA = controller. I have a question and can't find (or understand) the answer: How does the peripheral asking for a DMA transfer specify to the CPU if = it asks for a memory/IO read/write cycle? Thank you very much for your help, Regards, Beno=EEt le Blanc THALES Communications EDS/SIE/CAE 01 46 13 22 76 160 Boulevard de Valmy - BP 82=20 92704 COLOMBES CEDEX * N'imprimez ce message qu'en cas de n=E9cessit=E9.
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