Pointers
DPB
旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커�Field Name �Offset�Length�Type�Description � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_drive �+0 �1 쿍 쿗ogical drive # assoc with DPB � � � � � �(A=0,B=1,...) � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_unit �+1 �1 쿍 쿏river unit number of DPB � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_driver_addr �+2 �4 쿏 쿛ointer to driver � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_next_dpb �+6 �4 쿏 쿛ointer to next Drive parameter block � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_cbSector �+a �2 쿥 퀂ector size (for volume checking) � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_first_FAT �+c �2 쿥 퀂ector of 1st FAT (for ancient dev � � � � � 쿭rivers) � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_toggle_time �+e �4 쿏 퀃ime of last drive toggle � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_hVPB �+12 �2 쿥 쿴andle of volume currently in drive � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_media �+14 �1 쿍 쿺ost recent media that was in drive � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_flags �+15 �1 쿍 퀂ynchronization flags (see below) � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_drive_lock �+16 �2 쿥 쿎ontains pid if drive locked by process � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb_strategy2 �+18 �4 쿏 퀂trategy2 addr (or 00000000) � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸
dpb_falgs flag definitions:
旼컴컴컴컴컴컫컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 쿙ame 쿍it Mask쿏escription � 쳐컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿏PBCHECK �0x10 쿭isk in drive is being removed/checked � � � 쿯or VPB � 쳐컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿏PBNONREMOV �0x20 �1 => drive supports non-removable media � 쳐컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿏PBVCRAMDISK�0x40 쿝am Disk Driver � 읕컴컴컴컴컴컨컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸
DPB3X
旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 �Field Name �Offset�Length�Type�Description � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_drive �+0 �1 쿍 쿗ogical drive # assoc with DPB � � � � � �(A=0,B=1,...) � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_UNIT �+1 �1 쿍 쿏river unit number of DPB � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_sector_size �+2 �2 쿥 쿞ize of physical sector in bytes � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_cluster_mask �+4 �1 쿍 쿞ectors/cluster - 1 � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_cluster_shift �+5 �1 쿍 쿗og2 of sectors/cluster � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_first_FAT �+6 �2 쿥 쿞tarting record of FATs � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_FAT_count �+8 �1 쿍 쿙umber of FATs for this drive � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_root_entries �+9 �2 쿥 쿙umber of directory entries � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_first_sector �+b �2 쿥 쿑irst sector of first cluster � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_max_cluster �+d �2 쿥 쿙umber of clusters on drive + 1 � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_FAT_size �+f �1 쿍 쿙umber of records occupied by FAT � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_dir_sector �+10 �2 쿥 쿞tarting record of directory � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_driver_addr �+12 �4 쿏 쿛ointer to driver � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_media �+16 �1 쿍 쿘edia byte � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_first_access �+17 �1 쿍 쿟his is initialized to -1 to force a � � � � � 쿺edia check the first time this DPB is � � � � � 퀅sed � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_next_dpb �+18 �4 쿏 쿛ointer to next Drive parameter block � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_next_free �+1c �2 쿥 쿎luster # of last allocated cluster � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb3x_free_cnt �+1e �2 쿥 쿎ount of free clusters, -1 if unknown � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸
DPB4X
旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 �Field Name �Offset�Length�Type�Description � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_drive �+0 �1 쿍 쿗ogical drive # assoc with DPB � � � � � �(A=0,B=1,...) � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_UNIT �+1 �1 쿍 쿏river unit number of DPB � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_sector_size �+2 �2 쿥 쿞ize of physical sector in bytes � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_cluster_mask �+4 �1 쿍 쿞ectors/cluster - 1 � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_cluster_shift �+5 �1 쿍 쿗og2 of sectors/cluster � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_first_FAT �+6 �2 쿥 쿞tarting record of FATs � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_FAT_count �+8 �1 쿍 쿙umber of FATs for this drive � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_root_entries �+9 �2 쿥 쿙umber of directory entries � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_first_sector �+b �2 쿥 쿑irst sector of first cluster � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_max_cluster �+d �2 쿥 쿙umber of clusters on drive + 1 � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_FAT_size �+f �2 쿥 쿙umber of records occupied by FAT � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_dir_sector �+11 �2 쿥 쿞tarting record of directory � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_driver_addr �+13 �4 쿏 쿛ointer to driver � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_media �+17 �1 쿍 쿘edia byte � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_first_access �+18 �1 쿍 쿟his is initialized to -1 to force a � � � � � 쿺edia check the first time this DPB is � � � � � 퀅sed � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_next_dpb �+19 �2 쿏 쿛ointer to next Drive parameter block � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_next_free �+1d �2 쿥 쿎luster # of last allocated cluster � 쳐컴컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 쿭pb4x_free_cnt �+1f �2 쿥 쿎ount of free clusters, -1 if unknown � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸