On Fri, Feb 4, 2011 at 5:02 AM, Peter <[email protected]> wrote: > Hi, > > data transfer from an SD card takes 0.4 microsecond per Byte in the most > simple mode, while the minimum cycle of the QL bus is 1.0 microsecond. So > both IDE and SD card are faster than the QL bus. > > SD cards are smaller and cheaper than IDE drives. Both offer more size > than a QL filesystem can use. > > If a fast SD card interface & driver for the QL was here: Where would be > the point in IDE for the QL? Apart from being too laid-back to copy data > to SD card once :-) > > I understand keeping the microdrive for antiquarianism, because it was > part of the original QL. But that doesn't count for IDE. Otherwise it > would be quite simple for me to implement. > > All the best > Peter >
Everything you say is true. Common sense. The main problem you have to overcome is 25 years of inertia. People are familiar with hard drives. Also, people seem to think SD cars are "dinky" like microdrives. The secondary problem is, the format and commands should be universal and should be used broadly in all new hardware - are you interested in licensing your design and code to anyone else? :) Dave _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
