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It basically means that you program the HBA for the specific DMA transfer before any data can be transferred. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of kepler Sent: Thursday, June 08, 2006 10:49 PM To: t13-ATA Cc: ATA Support Subject: [t13] What are the meaning of "set up the host DMA engine" and "initialize the DMA channel"? This message is from the T13 list server. On page 332 of ATA/ATAPI-6, it states that " The host shall have set up the host DMA engine" prior to making the state transition HDMA0:HDMA1, and "The host shall have initialized the DMA channel" prior to entering the HDMA1 staet. What are the meaning of "set up the host DMA engine" and "initialize the DMA channel"? Kepler
