> From: Robert Horton ... > Subject: [t13] Microsoft's answer to how to > identify SATA which is really a bridged PATA > ... > Has anyone seen Microsoft's answer on to how > to identify SATA which is really a bridged > PATA: > ... > Identifying Emulating Parallel ATA Mode and > Native Serial ATA Mode Controllers ... > > http://www.microsoft.com/whdc/hwdev/tech/storage/serialata_faq.mspx
Good reading, thank you, with pleasure I've forwarded that link in ways such as the example quoted below.
Pat LaVarre
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From: "Pat LaVarre" <[EMAIL PROTECTED]> Date: Wed Dec 3, 2003 12:38:53 PM US/Mountain Subject: [msc] media events while suspended, pleads msft
Kindly via t13 my attention recently reached: � http://www.microsoft.com/whdc/hwdev/tech/storage/serialata_faq.mspx Serial ATA in the Microsoft Operating System Environment Updated: July 18, 2003
I think we here (msc folk) should consider answering this plea from msft for usb2hs msc devices to report media events while suspended.
By msft I mean Microsoft.
By the vague jargon "media events" I mean tray closed, media inserted, media forcibly ejected, eject button pressed, etc. i.e. I have a more usefully complete set in mind in contrast to the 2003 MMC-4 subset.
I interpret the msft English I find there as a complaint that polling pointlessly resumes usb power.� In bus traces, the polling by Windows that I see for such events in PDT x00 RMB HDD/Flash and in PDT x05 DVD/CD includes such approaches as the bleeding edge 2003 MMC-4 op x46 GPCMD_GET_EVENT_STATUS_NOTIFICATION.
The msft English I am interpreting is: � ---
http://www.microsoft.com/whdc/hwdev/tech/storage/serialata_faq.mspx Serial ATA in the Microsoft Operating System Environment Updated: July 18, 2003 ...
CD-ROM Opportunities
Currently there is very little movement from CD-ROM and DVD-ROM drive manufacturers to adopt Serial ATA. The Serial ATA performance benefits to optical devices are not yet compelling and therefore Serial ATA adoption is often viewed as an unnecessary expense.
It is possible that Serial ATA will replace parallel ATA in personal computers in the future. If Serial ATA becomes dominant in the computer market, manufacturers of CD-ROM and DVD-ROM drives will have good reason to create product lines that support an interface other than parallel ATA.
The strongest candidates for a parallel ATA alternative are Serial ATA and USB 2.0. Both options have Windows support. Beyond cost, the biggest factor on which a new bus may be adopted is BIOS support for booting.
There is a hidden opportunity in the event of parallel ATA CD-ROM and DVD-ROM drives choosing a new storage interface. Currently CD-ROM and DVD-ROM drives do not have the ability to notify Windows of a media change. Windows is then required to poll the device to determine media status which prevents some types of power management for CD-ROM and DVD-ROM drives.
Right now neither Serial ATA nor USB has a standard method for media status notification. Microsoft encourages the industry to work toward creating standards for media status notification before CD-ROM drives are prepared to move to alternative interfaces.
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Pat LaVarre
