Inside Macintosh: Devices /

Chapter 4 - SCSI Manager 4.3 / SCSI Manager 4.3 Reference

SCSI Manager 4.3 Functions / SIM Support Functions

EnteringSIM

You use the EnteringSIM function to inform the XPT that your SIM code is running.

void EnteringSIM();

DESCRIPTION

The EnteringSIM function informs the XPT that subsequent code is not reentrant and instructs the Virtual Memory Manager to defer execution of VBL tasks, Time Manager tasks, completion routines, and any other code that could cause a page fault. A SIM must call this function whenever its code begins executing and call the corresponding ExitingSIM function on exit.

SPECIAL CONSIDERATIONS

You get the address of this function from the EnteringSIM field of the SIM initialization record.

SEE ALSO

See "Writing a SCSI Interface Module," beginning on page 4-15, for more information about using this function.