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%OUT BOOTFORM.INC...
;****************************************************************************
;AN000; - Structure of the Extended IBMBOOT record for DOS -. J.K.
;AN001; - D304 Include PHYDRV, CURHD to the header structure 11/09/87 J.K.
;****************************************************************************
BOOT_SIZE EQU 512
EXT_BOOT_SIGNATURE EQU 41 ;Extended boot signature
;
EXT_BPB_INFO STRUC
EBPB_BYTESPERSECTOR DW ?
EBPB_SECTORSPERCLUSTER DB ?
EBPB_RESERVEDSECTORS DW ?
EBPB_NUMBEROFFATS DB ?
EBPB_ROOTENTRIES DW ?
EBPB_TOTALSECTORS DW ?
EBPB_MEDIADESCRIPTOR DB ?
EBPB_SECTORSPERFAT DW ?
EBPB_SECTORSPERTRACK DW ?
EBPB_HEADS DW ?
EBPB_HIDDENSECTOR DD ?
EBPB_BIGTOTALSECTORS DD ?
EXT_BPB_INFO ENDS
;
;AN001; EXT_PHYDRV, EXT_CURHD included in the header for OS2.
EXT_IBMBOOT_HEADER STRUC
EXT_BOOT_JUMP DB 3 DUP (?)
EXT_BOOT_OEM DB 8 DUP (?)
EXT_BOOT_BPB DB type EXT_BPB_INFO dup (?)
EXT_PHYDRV DB 80h
EXT_CURHD DB 0
EXT_BOOT_SIG DB EXT_BOOT_SIGNATURE
EXT_BOOT_SERIAL DD ?
EXT_BOOT_VOL_LABEL DB 11 DUP (?)
EXT_SYSTEM_ID DB 8 DUP (?)
EXT_IBMBOOT_HEADER ENDS
;
BOOT_SIGNATURE = word ptr (BOOT_SIZE-2)
;
;J.K. This is the number of sectors (of size 512 bytes) that will cover
;the size of IBMLOAD program. IBMBOOT program has to at least read this
;many sectors, and these sectors should be the first cluster and consecutive.
;Make sure IBMBOOT program uses the same value as this.
IBMLOADSIZE equ 3 ;Number of sectors IBMBOOT program should read in.
|
