Da Zheng, le Tue 04 Aug 2009 16:15:10 +0800, a écrit : > The driver reads the keyboard status from the port 0x64, and it seems OK. It > doesn't work when the driver tries to write the command to the port 0x64. The > whole process dies. (the port 0x64 is used for both read the status and > writing the command.) > I have used ioperm to acquire the access to the port 0x64 before accessing > the port (K_STATUS is 0x64). > if (ioperm (K_STATUS, 1, 1) < 0) > return FALSE; > I use the root user to run the keyboard driver. I don't know what the > possible reason is:-(
I don't either, as that's roughly what the console driver does for e.g. the speaker, and it works for it. Just to make sure: you are using outb(value, 0x64) ? (not something else than outb, not another argument order). Samuel
