Inside Macintosh: Devices /

Chapter 6 - Power Manager / Power Manager Reference

Power Manager Dispatch Routines / Getting and Setting the SCSI ID

GetSCSIDiskModeAddress

You can use the GetSCSIDiskModeAddress function to find out the SCSI ID the computer uses in SCSI disk mode.

short GetSCSIDiskModeAddress();

DESCRIPTION

The GetSCSIDiskModeAddress function returns the SCSI ID that the computer uses when it is started up in SCSI disk mode. The returned value is in the range 1 to 6.

Note

When the computer is in SCSI disk mode, the computer appears as a hard disk to another computer.

ASSEMBLY-LANGUAGE INFORMATION

The trap is _PowerMgrDispatch ($A09E). The selector value for GetSCSIDiskModeAddress is 20 ($14) in the low word of register D0. The SCSI ID is returned in the low word of register D0.

SEE ALSO

You can use the PMFeatures function (page 6-41) to determine whether the computer supports SCSI disk mode.