Q. Sometimes the driver return the error code:10 
   (AD32_HandshakeError). What things will causes this 
   problem?

A. The driver send command and arguments into the command
   queue, and then read the FIFO to check does the data is
   the same as the command. If NOT, the driver returns the
   error code:10 (Hand Shake Error!!)

   If this ISO-AD32 card does not fully compatible with
   your PC hardware, it may causes this problem.

   In general case, the PCI bus uses 33MHz, and the ISA bus
   uses 33/4 = 8.3MHz. But in some PC, the PCI bus maybe uses
   up to 40MHz, and the ISA bus uses 40/4 = 10MHz. This may
   also causes the unstable problems. In this case, you have
   to slow down your ISA bus's timing by setting BIOS.