SPRAMRecord
SPRAMRecord (User-Defined ) structure
struct SPRAMRecord { Size Offset Description
short boardID; 2 0 Apple- defined card identification
char VendorUse1; 1 2 Reserved for vendor use
char VendorUse2; 1 3 Reserved for vendor use
char VendorUse3; 1 4 Reserved for vendor use
char VendorUse4 ; 1 5 Reserved for vendor use
char VendorUse5; 1 6 Reserved for vendor use
char VendorUse6; 1 7 Reserved for vendor use

Notes: If a card is removed from its slot, the corresponding sPRAM record is
cleared at the next system startup. If a different card is plugged back into
the slot, the corresponding sPRAM record is re initialized. A flag is set
each time an sPRAM record is initialized, to alert the Start Manager.