SCSI to IDE

Hey people, c'mon?! SD Card speeds: ---8<---cut here---8<--- Speed Class Rating The Speed Class Rating is the official unit of speed measurement for SD Cards, defined by the SD Association. The Class number represents a multiple of 8 Mb/s (1 MB/s), and meets the least sustained write speeds for a card in a fragmented state.[12] These are the ratings of some currently available cards:[12] a.. Class 0 cards do not specify performance, which includes all legacy cards prior to class specifications. b.. Class 2, 2 MB/s, slowest for SDHC cards. c.. Class 4, 4 MB/s. d.. Class 6, 6 MB/s. e.. Class 10, 10 MB/s. ---8<---cut here---8<--- Ok, now to SCSI specs ---8<---cut here---8<--- SCSI-1: 5MB/s Fast SCSI: 10MB/s Fast-Wide SCSI: 10MB/s Ultra SCSI: 20MB/s Ultra-Wide SCSI: 40MB/s ---8<---cut here---8<--- So... - I hope I can develop a SCSI bridge that can move 10MB/s, because I doubt a normal Atmel XMega will be capable of that. - If I can design a fast enough circuit, I can use a Class 10 card and will have 10MB/s. - Since it will be a hard disk emulator, and not a SD Card reader, I can have TWO interleaved cards on the bridge, so making 20MB/s easy - We are talking old computers here. What do you use about CLASSIC computing that goes beyond Fast-Wide SCSI? - Not all people are capable of begin big. - Maybe with ARM microcontrollers, Ultra2Wide can be achived. Who knows? Time to define DOWN TO EARTH specs and begin working :) Greetings from Brazil, Alexandre SOuza