[Àû¿ë´ë»ó: 0.74_SVN_new, DOSBox-x]

Alternate I/O port for IDE controller (alt status, etc). Set to 0 for default.

WARNING: Setting the I/O port to non-standard values will not work unless the guest OS is using the ISA PnP BIOS to detect the IDE controller.

For best compatability set this value to io+0x206, for example, io=1F0 altio=3F6.

The primary IDE controller will not claim port 3F7 if the primary floppy controller is enabled due to I/O port overlap in the 3F0-3F7 range.