Daniel O'Connor wrote: > > I have reason to use a USB to SCSI adapter under FBSD. I have a > > USB2Xchange from Adaptec, but (as usual for adaptec) it requires a firmware > > load, which appears harder in usb than in PCI. Does anyone know how to do > There is a USB firmware standard called DFU (Device Firmware Upgrade) which > quite a nunmber of devices use (eg Atmel WiFi, Ti USB Audio, etc). [...] > Unfortunatly it's hard to say if your device does DFU at all.. I would suggest > pulling it apart and trying to find data sheets on the chips in it. For anyone who doesn't thrill to the sound of plastic yielding a satisfying *SNAP*, I happen to have one of these (1989100) thanks to a friend, who also gave me a different device that works without a need for firmware load or anything -- though I have no SCSI devices to test, in case anyone is interested in things that Just Probably Work As-Is: umass0 at uhub3 port 1 configuration 1 interface 0 umass0: Microtech International, Inc. USB-SCSI-HD50, rev 1.00/1.00, addr 6 umass0: using SCSI over Bulk-Only scsibus0 at umass0: 2 targets, 1 lun per target probe(umass0:0:0:0): generic HBA error That's under NetBSD; FreeBSD looked comparable. It also required being snapped apart, because at first it didn't work at all, and I discovered two things: The power USB wire had come detached, and secondly, a SMD inductor was missing, so I have no idea how it ever passed quality control, nor do I want to know. Anyway, I'll not post a `usbgen' or `usbctl' from this device, as there's not much to see that's not already known, unless there's a call for it. Inside my device seems to be a Cypress Semiconductor chip, something like CY7xx8013-56PVC where the `xx' is hard to make out CYP 608578 The mystery `xx' could be `C6'; or the first character could be `0' or perhaps `6'; the second character could be a `6' or `8' or maybe a `C' or `0' -- hard to tell as there's a thick blue marker line atop the chip, and my eyes aren't so good. The Cypress site disagrees with my excuse for a browser, and in order to obtain these numbers, I had to bend back a thin soldered metal plate, which, in addition to the above-mentioned snaps, could be off-putting for someone who cares about warranties. Perhaps this would be helpful for someone else. I did notice this mailing list post for Linux, if not yet known: http://www.mail-archive.com/linux-usb-devel_at_lists.sourceforge.net/msg22138.html but I haven't looked into it. barry bouwsmaReceived on Tue Jan 04 2005 - 07:31:51 UTC
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