Keyboard lockup at redhat9 after runing modprobe ad1816

[winglion]

   I got a redhat9 in my c300+64m mem+ad1816 old pc!
The ad1816 is a isa card , I had to run "modprobe ad1816"
to get it active every time the pc boot!
the command i use is :
 modprobe ad1816 io=0x220 irq=7
It allways show me this result :
....ad1816 ....io 0x500 irq 7 dma 1,3

the problem is that some times ,after runing the modprobe
the keyboard lockup; some times,just some key lockup;
some times ,it work fine!

Some file I think will help are attach here:
 /proc/ isapnp  ioport dma




　winglion
　2003-06-18

dma
Description: Binary data

ioports
Description: Binary data

isapnp
Description: Binary data