Hi David, > I have an old DOS application that I want to run with FreeDOS. The DOS > app uses a memory stick for storage and has a custom USB driver. The
You mean your DOS app also uses USB? Is it possible to put the thing accessed by the DOS app on another controller than the USB stick? Then the BIOS can do the USB stick handling... :-) > driver is due to be retired for a variety of reasons including > that it doesn't support modern memory sticks. It probably does - but some modern sticks are formatted to FAT32 or even NTFS, and most DOS kernels do not support NTFS. Also, some USB storage drivers may fail to provide a drive letter for FAT32 partitions on your stick as well. > I'm aware that USBASPI.sys and DI1000DD.sys work to provide USB I personally prefer (Adaptec?) ASPIDISK instead of DI1000DD but actually an even easier way is to let the BIOS do the lowlevel stuff. Then your stick looks like a normal int13 disk for DOS and it will see all FAT16 and FAT32 partitions. > support under FreeDOS. Can someone point me toward documentation > for these drivers? I'm looking for information on how to call them > from C (although asm level docs would be fine). How about this: www.google.com/search?q=site%3Afd-doc.sourceforge.net+usbaspi Nice starting point? I would not recommend using a C / ASM API, you can use the drive letter :-p The USB driver gives you ASPI and the second driver then checks the partitions of your stick (or other USB disk) and gives a DOS FAT block device view of the first partition that looks as if DOS would want to use it. You can also use the drivers by Georg Potthast, they do support FAT32 and FAT16 as far as I remember :-). His drivers are split into one for the main USB stack and one which gives you a DOS block device, without the ASPI step as far as I remember. The interface of the USB stack is documented and block devices are a very classical, documented interface concept in any DOS :-) Eric ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
