Legacy Document

Inside Macintosh: Devices /

Chapter 2 - Slot Manager / Slot Manager Reference

Low-Level Routines /

InitSDeclMgr

This function is used only by the Macintosh Operating System.

FUNCTION InitSDeclMgr (spBlkPtr: SpBlockPtr): OSErr;

spBlkPtr

A pointer to a Slot Manager parameter block.

DESCRIPTION

The InitSDeclMgr function initializes the Slot Manager. The contents of the parameter block are undefined. This function allocates the slot information record and checks each slot for a card. If a card is present, the Slot Manager validates the card's firmware and the resulting information is placed in the slot's sInfoRecord. For empty slots, or cards that fail to initialize, the Slot Manager stores the appropriate error code in the initStatusA field of the sInfoRecord for the slot.

SPECIAL CONSIDERATIONS

The InitSDeclMgr function allocates memory.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the InitSDeclMgr function are

Trap macro	Selector
_SlotManager	$0020

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	$0020

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.