Legacy Document

Inside Macintosh: Devices /

Chapter 2 - Slot Manager / Slot Manager Reference

Low-Level Routines /

SPrimaryInit

This function is used only by the Macintosh Operating System.

FUNCTION SPrimaryInit (spBlkPtr: SpBlockPtr): OSErr;

spBlkPtr

A pointer to a Slot Manager parameter block.

-->

spFlags

SignedByte

Flags passed to the card's PrimaryInit code.

DESCRIPTION

Called by the Slot Manager during system startup, the SPrimaryInit function executes the code in the PrimaryInit entry of each card's board sResource. It passes the spFlags byte to the PrimaryInit code via the seFlags field of the SEBlock. The fWarmStart bit is set if a restart is being performed.

SPECIAL CONSIDERATIONS

The SPrimaryInit function may move memory.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the SPrimaryInit function are

Trap macro	Selector
_SlotManager	$0021

On entry, register D0 contains the routine selector and register A0 contains the address of the Slot Manager parameter block. When _SlotManager returns, register D0 contains the result code.

Registers on entry
A0	Address of the parameter block
D0	$0021

Registers on exit
D0	Result code

RESULT CODES

noErr	0	No error
smUnExBusErr	-308	A bus error occurred
smDisposePErr	-312	An error occurred during execution of DisposePtr
smBadsPtrErr	-346	Bad spsPointer value
smByteLanesErr	-347	Bad spByteLanes value

SEE ALSO

For more information about Slot Manager initialization, see "About the Slot Manager," beginning on page 2-15.