GetDefaultStartup

GetDefaultStartup Get default startup device name and reference

#include <Start.h> Start Manager

DefStartPtr pb ; pointer to an 8-byte DefStartRec structure

returns none

GetDefaultStartup obtains information from parameter RAM concerning

what kind of default startup device is being used.

pb is the address of an 8-byte DefStartRec parameter block structure.

It contains the following fields:

Out-In Name Type Size Offset Description

<- sdExtDevID SignedByte 1 0 External device ID

<- sdPartition SignedByte 1 1 Reserved for the future

<- sdSlotNum SignedByte 1 2 Slot number

<- sdSRsrc SignedByte 1 3 Slot resource ID

<- sdReserved1 SignedByte 1 0 Reserved for the future

<- sdReserved2 SignedByte 1 1 Reserved for the future

<- sdRefNum short 2 2 Negative = SCSI, Positive = Slot

Notes: Deciding which variant to use depends on the content of the sdRefNum field.

A negative number means the driver reference of a SCSI device (scsiDev)

and no further information is needed, while a positive number means you'll

have to access the information in the slotDev variant. If you have to access

the information in slotDev, only sdExtDevID (the slot's driver), sdSlotNum

(the slot number) and sdSRsrcID (the slot resource ID) will contain

pertinent data. sdPartition is a reserved field.

Referenced by (2):