Thank you for that link. On Wed, 24 Jun 2015 19:10:23 -0400 John Hupp <free...@prpcompany.com> writes: > I'm working now with FreeDOS 1.1 on an old machine with a DFI P5BTX/L > > motherboard with Intel 82430TX chipset, AMD K6/233, and 64MB. > > It has a USB 1 implementation, so I thought I would see if I could > get > some functionality out of it. > > Locating FreeDOS documentation on its USB support was a bit > difficult. > Searches tend to bring up outdated information. There is an index > of > Technotes at http://www.freedos.org/wiki/index.php/Technotes, but > most > of those entries have just an article number with no title/subject. > > There is a 1-paragraph summary at > https://en.wikipedia.org/?title=FreeDOS#Universal_Serial_Bus that > provides some bare leads. The most definitive leads came from > http://www.freedos.org/wiki/index.php/Printer<https://en.wikipedia.org/?t itle=FreeDOS#Universal_Serial_Bus>. > > For my purposes I was only interested in open source, which narrowed > the > field down to one candidate: Bret Johnson's UsbDOS software at > http://bretjohnson.us/ > > His last update was in 2010, but there is some activity in the > forum. > His own assessment is that the overall state of the software is > alpha/beta quality, depending on which program in the suite you're > looking at. > > The suite includes some testing and support tools, and also a UHCI > driver and drivers for other common hardware: keyboard, mouse, > joystick, > printer, and hard/flash drives. > > One tool (USBHOSTS) identifies your host controllers so that you > will > know whether his software supports them. His USBUHCI/L drivers > support > older Intel and Via UHCI controllers. > > Another tool (IRQ) aims to survey the current usage status of all > IRQ's, > whether each IRQ is enabled and what is (or commonly would be) using > > it. Perhaps I didn't try hard enough to understand it, but I found > the > results a little less than definitive. [I would, in fact, very much > > like to find a good tool for identifying used/free IRQ, I/O and DMA > resources.] > > I read through most of the informative and well-written > USBINTRO.DOC. > Though it was 186 pages and somewhat exhausting, I would much rather > > have this state of affairs than the slim and spotty documentation > that > often comes with open source software, especially when it is in > earlier > development. > > One usage note that I don't remember reading in the DOC: For the > drivers > I was using, it was insufficient to simply put the program directory > in > the PATH. It wouldn't work for me unless I did a CD into the > directory > before running anything. > > Speaking of running anything, the drivers are TSR's rather than > boot-time only. So you can load and unload them as needed. > > And since my current first interest was in using flash drives, that > approach suits me well. He also notes that doing USB in DOS is > memory-intensive, so that is another good reason to load as needed. > > I got the drivers for the host controller and USB drive running. > They > both loaded automatically into upper memory. You can, by the way, > load > drivers first and then insert a flash drive, or insert a drive first > > then load the drivers. My commands were simply: > USBUHCIL > USBDRIVE /Devices:2 /Disks:2 /Drives:2 > > Testing with a SimpleTech 1GB FAT16 and a Kingston DataTraveler G3 > 4GB > FAT32: I found that it works, but very slowly. A DIR command takes > 10-15s. Copying a 10KB file took perhaps 20-30s. Copying a 500KB > file > took perhaps 10 minutes. > > But the data integrity seemed good. The small and larger file > copies > both opened fine. > > About copy speed: USBDRIVE has a MaximumSectors option which can be > set > from 1 to 64. By default it is set at 1, the slowest but most > reliable > level. The developer uses 4 with his drives. I got an error during > a > copy using 4, but with 3 no error. Set at 3 and doing a more > accurate > test, I copied a 50KB file in 90 sec. > > There is some issue with the DIR command. A DIR of the Kingston 4GB > > FAT32 took 16 sec, but a DIR of the SimpleTech 1GB FAT16 never > finishes. It lists all the files and directories, then summarizes > xx > File(s) and xx Dir(s), but then hangs there and never returns to the > > command prompt. A reboot is required.
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