Hello, Andrew Dyer, le Mon 18 Feb 2008 21:15:42 +0000, a écrit : > I am having problems using ioperm() to try and access a parallel printer port > on > a PCI card in my system running WinXP. The port is mapped to I/O port address > 0xDCD8. I cannot access the port because the ioperm() driver has a check to > limit I/O port accesses to < 0x400.
Yes: on Linux ioperm doesn't work above 0x400. On Linux, so as to access ports above 0x400 you need to use iopl(), that's why ioperm in cygwin does this. Now, allowing >= 0x400 would be possible in cygwin's ioperm, but then you'd get problems when using the code on Linux... The truly proper way is really to use iopl(). Samuel -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
