* Peter Stuge <[EMAIL PROTECTED]> [060707 19:52]: > This is a nice idea. > > On Fri, Jul 07, 2006 at 04:18:25PM +0200, Stefan Reinauer wrote: > > > what you need is a debug device, which mostly looks like a usb > > > style null modem cable. No idea where to get this hardware > > > though. > > > > D'uh - it reads any usb 2 to usb 2 data link cable can be used for > > this purpose. Such cables are available for ~ 10$ > > Where did you read this? > > I doubt they will work, unless the manufacturers were exceedingly > clever and actually implemented the DEBUG_MODE feature in the > device..
You are right. The cable would need to implement the DEBUG_MODE feature. I read over page 5 of http://www.intel.com/technology/magazine/computing/it09021.pdf and it actually says so. The question is now: what devices/cables can be used for this purpose. Or is it maybe trivial to build such a device yourself in a low quantity? > I'm not sure if this requirement is compatible with the CDC spec that > USB-serial adapters implement, but it would indeed be very handy if > minicom+the kernel USB-serial driver could be used with the host end > of the debug device. That would indeed be great! > It's quite possible that the device requires a special application, > but in any case such an application would be trivial to hack up. Or just a small dummy serial driver so minicom or whatever could be used. > I think the hard part is to find or make the hardware. Or maybe not > so hard if you have a proven USB2 HS platform and are comfortable > with tweaking USB descriptors. All I have handy is USB2 FS. :( The idea is probably to get a cost effective solution, otherwise a lot of volunteers might get locked out of joining the project. Stefan -- coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br. Tel.: +49 761 7668825 • Fax: +49 761 7664613 Email: [EMAIL PROTECTED] • http://www.coresystems.de/ -- linuxbios mailing list [email protected] http://www.openbios.org/mailman/listinfo/linuxbios
