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Go-faster stripes for PC-format media access app

Published: 20th Jan 2009, 00:21:43 | Permalink | Printable

Fat32Fs, by Jeffrey Doggert, lets Iyonix users read from and write to large FAT-formatted media, such as Flash-based removable media. Drobe reader Richard Ashbery got in touch to say the software is now much faster - it can read 100MB of data off a Sandisk 4GB CF Extreme 3 card in 59 seconds and write it back in 57 seconds, showing write speeds have improved by a factor of four.

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Discussion

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Good job he's using an extra expensive CF card - that 1.8MB/s transfer rate is in danger of being limited by a card that can only do, oh, about 30MB/s.

Sarcasm aside, it does prove the machine is using USB2, since USB1.1 tops out at 1.4MB/s - unless he's using a CF to IDE adaptor of course.

 is a RISC OS Userninja on 20/1/09 1:23AM
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Thanks! Works fine with my 8GB USB stick.

 is a RISC OS Userhzn on 20/1/09 4:36AM
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It has to be said that the Iyonix's USB speeds are not that great - at least Fat32Fs is no longer slower than SCSIFS!

 is a RISC OS Userjeffd on 20/1/09 7:37AM
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ninja: the fastest USB1.1 I have ever seen (raw transfers without FS overhead, hand-tuned driver) was 800 KB/s. Never underestimate USB protocol overheads and latency.

 is a RISC OS Userhubersn on 20/1/09 11:01AM
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If anyone is lookinf for a fast SD card then I recomend PEAK. Excellent data transfer rate for the cost. I would also recommend looking at eeepc forums to compare speeds since this was a big discussion point on there.

It saves spoending money on an over-hyped brand. Good as they are, you can buy a speed equivalenty for 1/4 the price.

Cheers Bob

 is a RISC OS Usernijinsky on 20/1/09 1:55PM
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Does this open up any MP3-player etc possibilities?

 is a RISC OS UserAW on 20/1/09 7:29PM
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>> Does this open up any MP3-player etc possibilities?

It should do as long as it appears as a mass storage device. I don't have an MP3 player myself, but I tried Fat32Fs with a Nokia phone. The phone hid the SD card's partition table for some reason so I had to change the initialisation code to be able to cope. Having done that Fat32Fs should be ok - YMMV.

 is a RISC OS Userjeffd on 21/1/09 8:02AM
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I tried a Creative Labs 2gb stick type player and it works. Also a 250 gb USB Hard Drive .. though better via the powered USB hub. I find the USB a bit iffy sometimes on the Iyonix and using !USBKick. Anyway can use them really well :) Thanks

 is a RISC OS UserHairy on 20/1/09 8:45PM
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So what is the format used for memory sticks and SD cards - they can be read/wrote to already?

 is a RISC OS UserAW on 21/1/09 9:21PM
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