SReadPBSize
SpBlockPtr spBlkPtr ; address of 56-byte Slot Parameter Block
structure
SReadPBSize reads the physical block size of the sBlock pointed to by spsPointer and identified by spID. Used only by the Operating System.
spBlkPtr is the address of a 56-byte Slot Parameter Block structure.
The relevant fields are as follows:
Out-In Name Type Size Offset Description
Æ spsPointer Ptr 4 4 Structure pointer ¨ spSize long 4 8 Size of structure
Æ spID char 1 50 Structure ID
¨ spByteLanes char 1 53 ByteLanes from format block in card ROM
Æ spFlags char 1 54 Internal use only
Other affected parameters are:
spResult long 4 0 FUNCTION result
noErr (0) No error
smEmptySlot (-300) No card in slot.
smCRCFail (-301) CRC check failed.
smFormatErr (-302) FHeader format is not Apple's
smRevisionErr (-303) The revision of the card's declaration ROM is wrong.
smNoDir (-304) Directory offset is NIL
smNosInfoArray (-306) The SDM could not allocate memory for the sInfo
array.
smResrvErr (-307) A reserved field of the declaration ROM was used.
smUnExBusErr (-308) An unexpected bus error occurred.
smBLFieldBad (-309) A valid ByteLanes field was not found.
smDisposePErr (-312) An error occurred during execution of DisposPointer.
smNoBoardSRsrc (-313) There is no board sResource.
smGetPRErr (-314) Error during execution of sGetPRAMRec.
smNoBoardId (-315) There is no board ID.
smInitStatVErr (-316) The InitStatus_V field was negative after Primary or
Secondary Init.
smInitTblVErr (-317) Error while trying to initialize the sResource Table.
smNoJmpTbl (-318) Slot Manager jump table could not be created smBadBoardId (-319) Board ID was wrong; reinit the PRAM record
Notes: SReadPBSize also checks to see that the upper byte is 0 if the fckReserved
flag is set. The parameter spsPointer points to the resulting logical block
when SReadPBSize is done.