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bigmessowires, I meant 240 kiloBYTES per second, using a class 10 card. SPI running at 24MHz at the moment. I'm not bit-bashing SPI though - I'm loading 4 bytes at a time into a FIFO buffer, and letting the hardware clock out bits to the SD card without software intervention. I suspect the SD...

Awesome detective work dougg3! I've confirmed that mode page 0x30 and identifying as a Seagate ST225N drive is sufficient for Drive Setup to work without patches. I haven't made it configurable yet. I spent too much time on the weekend dealing with a broken car waterpump, and not enough time on...

biggmessofwires: I certainly haven't had any issues with the occasional high latencies that flash memory introduces - the SCSI disk drivers don't seem to have any fixed timeouts that I've run across yet. Did you use the ACMD23 (SET_WR_BLK_ERASE_COUNT) command before writing the data ? Does...

SD write speeds are currently unacceptable (50k/sec). I'll spend time this weekend improving that using multi-sector write commands, adding DMA support, and bumping the SPI clock up from 16MHz to 25MHz. It is my belief that the multi-sector write command (CMD25) should overcome most of the...

Data is stored on the card in exactly the same way it any other SCSI disk device. hfsutils (http://www.mars.org/home/rob/proj/hfs/) can be used to access the data on Windows or Linux. I don't have a modern mac, but I would assume that it can access the data natively. You could either use a...

gEDA runs on everything, including windows, so you have no excuse :b&w: http://www.delorie.com/pcb/geda-windows/ The software is built using the Cypress PSoC Creator 2.2 (http://www.cypress.com/psoccreator/), which is Windows-only AFAIK. Although it looks like I'm out-of-date, and I need...

The schematic and PCB were done using the free gEDA tools (http://www.geda-project.org/‎)

The USB stack on the chip is guest only. I couldn't find any microcontroller with a fast USB2.0 host, but that was proably 2 years ago now. The SPI protocol will certainly be the limiting factor here. Theoretically it would be possible to implement the 4-bit protocol using the progammable...

Hi, Is anyone interested in building or buying a homebrew SCSI-to-SD card adaptor ? I have developed such a device which is already capable of booting and running OS 7.5.3 on the old pizza-box macs. It also works as a normal SCSI-2 device under Linux as well, so it should work on most...