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Inside Macintosh: Devices /

Chapter 2 - Slot Manager / Slot Manager Reference

Slot Manager Routines / Getting Information About Expansion Cards and Declaration ROMs

SCkCardStat

You can use the SCkCardStat function to check the initialization status of an expansion card.

FUNCTION SCkCardStat (spBlkPtr: SpBlockPtr): OSErr;

spBlkPtr

A pointer to a Slot Manager parameter block.

-->	spSlot	SignedByte	The slot number.
X	spResult	LongInt

DESCRIPTION

The SCkCardStat function checks the InitStatusA field of the slot information record for the expansion card in the designated slot. You specify the slot in the spSlot field of the Slot Manager parameter block you point to in the spBlkPtr parameter. The SCkCardStat function returns the noErr result code if the InitStatusA field contains a nonzero value.

SPECIAL CONSIDERATIONS

This function may alter the contents of the spResult field. Your application should not depend on the values returned in this field.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the SCkCardStat function are

Trap macro	Selector
_SlotManager	$0018

You must set up register D0 with the routine selector and register A0 with 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	$0018

Registers on exit
D0	Result code

RESULT CODES

noErr	0	No error
smEmptySlot	-300	No card in this slot

SEE ALSO

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