Inside Macintosh: Devices /

Chapter 5 - ADB Manager / ADB Manager Reference

ADB Manager Routines / Getting ADB Device Information

GetADBInfo

You can use the GetADBInfo function to get information about an ADB device, specified by its ADB address.

FUNCTION GetADBInfo (VAR info: ADBDataBlock; 
                     adbAddr: ADBAddress): OSErr;

info

An ADB data block. On exit, the fields of this parameter block are filled with information about the specified ADB device.

adbAddr

The ADB address of a device.

<--	devType	SignedByte	The device handler ID.
<--	origADBAddr	SignedByte	The device's default ADB address.
<--	dbServiceRtPtr	Ptr	The address of the device's device handler.
<--	dbDataAreaAddr	Ptr	The address of the device handler's data storage area.

DESCRIPTION

The GetADBInfo function returns, through the info parameter, information from the ADB device table entry of the device whose ADB address is specified by the adbAddr parameter.

SPECIAL CONSIDERATIONS

Once the ADB Manager has set the initial values for an ADB device in the ADB device table, it updates the device table entry for the device to reflect changes only to the address of the device handler routine and data area pointer.

RESULT CODES

noErr

0

No error