[comp.sys.ibm.pc] IOCTL

jaz@abvax.UUCP (Jack A. Zucker) (06/27/89)

I was wondering if anyone can give me some examples of IOCtl usage with 
sub-functions 2 and 3. Are these functions used with any of the "common"
device drivers such as ansi.sys, vdisk.sys, etc. or are these for future or
custom drivers ?
-jaz