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Curtis, I've never seen an ATAPI drive report that it can do overlap. TTFN, MKE -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Curtis Stevens Sent: Monday, September 20, 2004 6:12 PM To: Jeff Garzik Cc: ATA (E-mail) Subject: RE: [t13] ATAPI Command Overlap and Queuing This message is from the T13 list server. Actually, ATAPI queuing and overlap are defined at the ATA level. I just don't think that they are used. I am not even sure if they are implemented. ------------------------------------------------ Curtis E. Stevens 20511 Lake Forest Dr. #C 214-D Lake Forest, Ca. 92630 Phone: 949-672-7933 Cell: 949-307-5050 E-Mail: [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff Garzik Sent: Monday, September 20, 2004 6:01 PM To: Curtis Stevens Cc: ATA (E-mail) Subject: Re: [t13] ATAPI Command Overlap and Queuing This message is from the T13 list server. Curtis Stevens wrote: > Does anyone know if ATAPI overlap and queuing are used? If not this > would be a good opportunity to obsolete them. Well, overlap is pointless on SATA :) Open to debate about queueing... in theory the user could be using an ATAPI->SCSI adapter, with a "real" SCSI disk attached that supports queueing. Unless I'm mistaken, queueing isn't defined for the PACKET command at the ATA command set level. Jeff
