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Inside Macintosh: Devices /

Chapter 4 - SCSI Manager 4.3 / SCSI Manager 4.3 Reference

SCSI Manager 4.3 Functions / SIM Internal Functions

SCSIRegisterWithNewXPT

This function informs a SIM that a new XPT layer has been installed. The SIM should call the SCSIReregisterBus function to register itself with the new XPT.

typedef void (*SIMActionProc) (void * scsiPB, Ptr SIMGlobals);

scsiPB

A pointer to a SCSI Manager parameter block.

SIMGlobals

A pointer to the SIM's static data storage.

-->	scsiPBLength	UInt16	The size of the parameter block.
-->	scsiFunctionCode	UInt8	The SCSIRegisterWithNewXPT function selector code (0x88).

DESCRIPTION

After a new XPT installs itself, and before it removes the old XPT, it sends the SCSIRegisterWithNewXPT request to all SIMs registered with the old XPT. Each SIM should then call the SCSIReregisterBus function to register with the new XPT. This allows SIMs to keep their existing bus number and static data storage when installing themselves in a new XPT.

RESULT CODES

noErr	0	No error
scsiQLinkInvalid	-7881	The qLink field was not 0