To: DanZ who wrote (14650 ) 6/9/1998 6:27:00 PM From: Johnathan C. Doe Respond to of 53068
For the Adaptec followers: Looking over the post here about facts on all the technology issues. I thought I would add what I have researched. Firewire and USB will be separate and simultaneous technologies. USB will be for the slow stuff. Firewire will be for the really fast stuff. There is no future expansion to the specifications for USB. It will end at 12 Mbps and that is it. I think this is VERY slow for what is coming in the next couple years. For some reason, USB has been sold as THE connector, but Firewire is going to be what is developed, like SCSI. Like SCSI, overtime, the speed will change and the complexities of the instruction sets will evolve. None of that is planned for USB. USB will hook up speakers, the keyboard, the mouse; stuff like that. Although talk is for USB to do scanners, printers, xDSL modems; it seems to me that Firewire makes more sense for these data-intensive tasks. Firewire will start out at some ultra SCSI type speed and move up. It is expected to hit gigabyte throughput. Perfect for HDTV recording and routing. There are supposed to be complex SCSI like commands and devices can interact independent of the CPU on the chain. One chain can connect 63 devices; that should be enough. Communications over USB therefore are dumb, Firewire allows custimized instruction set utilization. I think there is enough here to justify a company doing it as a specialty independent of Intel. Firewire is really for video; that is what it is really NEEDED for. All else are extras. It is the video content that has got Microsoft pushing Firewire and ditching USB. USB is a nice serial port for the next generation of computers, but all the real heavy connecting work will be Firewire, IEEE 1394. It's a standard that is evolving. Disk drives will also be hooked up to Firewire, not USB. There might well end up being a SCSI to Firewire converter and the SCSI 3 commands (Ultra SCSI is SCSI 3 folks) might get embedded into Firewire as legacy support. In the next 5 years, SCSI will be substantially replaced by Firewire in one way or another.