This message is from the T13 list server.
On Thu, 25 Apr 2002 09:25:45 +0100, Gilles Molli� wrote: >This message is from the T13 list server. >As queued commands are not supported, the way to proceed >is to wait the write is finished before sending the following. Yes, I assume you would just issue a series of "write" commands to the device just like writing to any other device. >What delay (in ms ? in micro sec ?) do I have between the device >has written data on the support, and the next write command I >can send ? As soon as the device has status of BSY=0 DRQ=0 the command is completed at the interface, the actual writing to the media may not be done yet but that doesn't matter, the device is ready to receive the next command from the host. The only exception are those "immediate" commands that toggle the old DSC bit to say when the device activity has been completed. But I don't see the DSC bit being used for read/write commands. >My concern is that, the disc (CD-R, DVD-R or whatever) is still >running.and I don't know how the proptocol is managing this. Yes, the device may still be writing data at the time it is ready to start processing the next command. The device will manage this internally. *** Hale Landis *** www.ata-atapi.com ***
