This message is from the T13 list server.
From: Wolford, Jeff > ATA-7 Conflict: Download Microcode for ATAPI drives > I have found a conflict in the ATA-7 specification: > In the Identify Packet Device, its lists Word 83, bit 0 as indicating > Download Microcode command support > However: > Under the Download Microcode command (Sec 6.11) it says the use is > "Prohibited" for packet command devices. This "conflict" can also be found in ATA/ATAPI-4, ATA/ATAPI-5 and ATA/ATAPI-6. > QUESTION: Why is the download microcode command prohibited for ATAPI > devices ? Good question. I see no reason for the prohibition for the DOWNLOAD MICROCODE command. However, there is a long history for why ATAPI devices are required to implement some of the other ATA commmands in a very specific manner - such as READ SECTORS. I think there would be lots of problems if those requirements were changed. Hale *** Hale Landis *** www.ata-atapi.com ***
