> From: PeterH <[email protected]> >Date: Mon, 19 Jan 2009 22:04:43 -0800 > >On Jan 19, 2009, at 9:42 PM, Clark Martin wrote: > >> t's not the drives, it's the controller card > >It's the firmware within the controller card, not the controller >hardware itself. > >The LBA48 property, which is required to support drives larger than >131,082 MB, is a protocol extension, not a hardware extension. > >For LBA24, the card issues one CDB (command data buffer) to the drive. > >For LBA48, the card issues two CDBs, each one describing 24 bits.
Can somebody explain why, while a protocol that allows addressing 2**48 512-byte sectors is called LBA48, one that allows addressing 2**28 512-byte sectors is called LBA24, not LBA28? >Apple's G4 firmware can be changed to enable the LBA48 property. > >No PCI ATA card can be similarly enabled. > >Which is perhaps one very good reason to stick with Apple's on-mobo >ATA controllers. How does the Intech Hicap driver get around the 128-GB limitation without any firmware modification? - Aaron --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
