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Text File | 1991-11-06 | 7.6 KB | 326 lines

; ; Structures for SCSI commands ; io_cmd struc io_cmd_op db ? ;Opcode if extended_io io_cmd_lun db ? io_cmd_lba_b3 db ? ;Logical Block Address io_cmd_lba_b2 db ? io_cmd_lba_b1 db ? io_cmd_lba_b0 db ? io_cmd_dummy1 db ? io_cmd_cnt_b1 db ? ;Block Count io_cmd_cnt_b0 db ? io_cmd_dummy2 db ? else io_cmd_lba_b2 db ? ;Logical Block Address / Lun io_cmd_lba_b1 db ? io_cmd_lba_b0 db ? io_cmd_cnt_b0 db ? ;Block Count io_cmd_dummy1 db ? endif io_cmd ends tio_cmd struc tio_cmd_op db ? ;Opcode tio_cmd_lun db ? ;Lun tio_cmd_cnt_b2 db ? ;Block Count tio_cmd_cnt_b1 db ? tio_cmd_cnt_b0 db ? tio_cmd_dummy1 db ? tio_cmd ends ; ; Format the Unit ; fmt_cmd struc fmt_cmd_op db ? ;Opcode fmt_cmd_type db ? ;Format Type fmt_cmd_dummy1 db ? fmt_cmd_il_b1 db ? ;Interleave (MSB) fmt_cmd_il_b0 db ? ;Interleave (LSB) fmt_cmd_dummy3 db ? fmt_cmd ends ; ; Verify Sectors ; ver_cmd struc ver_cmd_op db ? ;Opcode ver_cmd_lun db ? ;Lun ver_cmd_lba_b3 db ? ;Logical Block Address MSB ver_cmd_lba_b2 db ? ver_cmd_lba_b1 db ? ver_cmd_lba_b0 db ? ;Logical Block Address LSB ver_cmd_dummy1 db ? ver_cmd_len_b1 db ? ;Length MSB ver_cmd_len_b0 db ? ;Length LSB ver_cmd_dummy2 db ? ver_cmd ends ; ; Load / Unload a Tape ; load_cmd struc load_cmd_op db ? ;Opcode load_cmd_lun db ? ;Lun load_cmd_dummy1 db 2 dup (?) load_cmd_type db ? ;Load / Unload load_cmd_dummy2 db ? load_cmd ends ; ; Write Filemarks on a Tape ; fm_cmd struc fm_cmd_op db ? ;Opcode fm_cmd_lun db ? ;Lun fm_cmd_cnt_b2 db ? ;Filemark MSB fm_cmd_cnt_b1 db ? fm_cmd_cnt_b0 db ? ;Filemark LSB fm_cmd_dummy db ? fm_cmd ends ; ; Space a Tape ; space_cmd struc space_cmd_op db ? ;Opcode space_cmd_code db ? space_cmd_cnt2 db ? ;Count space_cmd_cnt1 db ? space_cmd_cnt0 db ? space_cmd_dummy db ? space_cmd ends ; ; Reassign a Block ; remap_cmd struc remap_cmd_op db ? ;Opcode remap_cmd_lun db ? ;Lun remap_cmd_dum1 db ? ;Reserved remap_cmd_dum2 db ? remap_cmd_dum3 db ? remap_cmd_dum4 db ? remap_cmd ends ; ; Structure(s) returned by the sense command(s) ; sense struc sense_sense db ? ;Sense (Error) code sense_lba_b2 db ? ;Failed Block Address sense_lba_b1 db ? sense_lba_b0 db ? sense ends e_sense struc e_sense_ccs db ? ;0x70 for Extended Sense e_sense_dummy1 db ? e_sense_sense db ? ;Sense (Error) Group e_sense_lba_b3 db ? ;Failed Block Address e_sense_lba_b2 db ? e_sense_lba_b1 db ? e_sense_lba_b0 db ? e_sense ends ; ; Structure returned by the unit inquiry command ; inq struc inq_dev_type db ? ;Device Type inq_dev_qual db ? ;Device Qualifier ife mini_inquire inq_stand_rev db ? ;Standard Revision Level inq_format db ? ;Response Format inq_length db ? ;Length of Extra Data inq_reserv1 db ? inq_reserv2 db ? inq_reserv3 db ? inq_manufact db 8 dup (?) ;Manufacture inq_product db 16 dup (?) ;Product endif inq ends ; ; Structure returned by the read drive capacity command ; cap struc cap_sectors_b3 db ? ;MSB of sector count cap_sectors_b2 db ? cap_sectors_b1 db ? cap_sectors_b0 db ? ;LSB of sector count cap_size_b3 db ? ;MSB of sector size cap_size_b2 db ? cap_size_b1 db ? cap_size_b0 db ? ;LSB of sector size cap ends ; ; Structure Definitions For Our Device Driver ; bpb struc bpb_ss dw ? ;Sector Size bpb_au db ? ;Cluster Size in Sectors bpb_rs dw ? ;Reserved Sectors bpb_nf db ? ;Number of Fats bpb_de dw ? ;Number of Root Directory Entries bpb_ts dw ? ;Total Number Of Sectors bpb_md db ? ;Media Descriptor bpb_fs dw ? ;Number of Sectors in each Fat bpb_st dw ? ;Number of Sectors per Track bpb_nh dw ? ;Number of Heads bpb_hs_lsw dw ? ;Hidden Sectors (Least Sig Word) bpb_hs_msw dw ? ;Hidden Sectors (Most Sig Word) bpb_ts_lsw dw ? ;Large Total Sector Count bpb_ts_msw dw ? bpb_res db 6 dup (?) ;Reserved bpb ends ; ; ioctl function 42h/62h ; ioctl_fmt struc ioctl_fmt_spec db ? ;Special Flags ioctl_fmt_head dw ? ;Head to Format ioctl_fmt_cyl dw ? ;Cylinder to Format ioctl_fmt_len dw ? ;How Many Tracks ioctl_fmt ends ; ; ioctl function 61h ; ioctl_read struc ioctl_read_spec db ? ;Special Flags ioctl_read_head dw ? ;Head to Read ioctl_read_cyl dw ? ;Cylinder to Read ioctl_read_sect dw ? ;Sector to Read ioctl_read_len dw ? ;How Many Sectors ioctl_read_ofs dw ? ;Buffer Offset ioctl_read_seg dw ? ;Buffer Segment ioctl_read ends ; ; ioctl function 60h/61h return ; dpb struc dpb_special db ? ;Special Flags dpb_type db ? ;Device Type dpb_attr dw ? ;Device Attributes dpb_cyl dw ? ;Device Cylinder Count dpb_media db ? ;Device Media Type if Diskette dpb_bpb db size bpb dup (?) dpb_sectors dw ? ;Sectors in Track dpb_track dd SECT_TRACK dup (?) dpb ends ; ; The internal control structure for a SCSI device ; unit struc unit_1st_drv db ? ;DOS Drive Numbers unit_num_drv db ? ;DOS Drive Count unit_select db ? ;SCSI Select Bit unit_mcheck db ? ;Media Check Byte unit_inq_buf db size inq dup (?) unit_inq_term db ? unit_cap_buf db size cap dup (?) unit_sense db size sense dup (?) unit_e_sense db size e_sense dup (?) unit ends ; ; Ioctl Commands ; ioc struc ioc_command dw ? ;Command ioc_param1 dw ? ;Command Dependent Data ioc_param2 dw ? ;Command Dependent Data ioc_buf_seg dw ? ;Buffer Segment ioc_buf_ofs dw ? ;Buffer Offset ioc_buf_len dw ? ;Buffer Length ioc ends ; ; DOS requests ; rh struc rh_len db ? ;Length of Packet rh_unit db ? ;Unit Code (Block Only) rh_cmd db ? ;Command Code rh_status dw ? ;Returned Status rh_res db 8 dup (?) ;Reserved rh ends rh0 struc ;INITIALIZATION rh0_rh db size rh dup (?) ;Fixed Portion rh0_nunits db ? ;Number of units (Block Only) rh0_brk_ofs dw ? ;Break Address (Offset) rh0_brk_seg dw ? ;Break Address (Segment) rh0_bpb_tbo dw ? ;Pointer to BPB Array (Offset) rh0_bpb_tbs dw ? ;Pointer to BPB Array (Segment) rh0_drv_ltr db ? ;First Available Drive (DOS 3+, Block Only) rh0 ends rh1 struc ;MEDIA CHECK rh1_rh db size rh dup (?) ;Fixed Portion rh1_media db ? ;Media Descriptor from DPB rh1_md_stat db ? ;Media Status returned by Device Driver rh1_volid_ofs dw ? ;Offset of Volume ID String (DOS 3+) rh1_volid_seg dw ? ;Segment of Volume ID String (DOS 3+) rh1 ends rh2 struc ;GET BPB rh2_rh db size rh dup (?) ;Fixed Portion rh2_media db ? ;Media Descriptor from DPB rh2_buf_ofs dw ? ;Offset of Data Transfer Area rh2_buf_seg dw ? ;Segment of Data Transfer Area rh2_pbpbo dw ? ;Offset of Pointer to BPB rh2_pbpbs dw ? ;Segment of Pointer to BPB rh2 ends rh4 struc ;INPUT rh4_rh db size rh dup (?) ;Fixed Portion rh4_media db ? ;Media Descriptor from DPB rh4_buf_ofs dw ? ;Offset of Data Transfer Area rh4_buf_seg dw ? ;Segment of Data Transfer Area rh4_count dw ? ;Transfer Count (Sectors) rh4_sector dw ? ;Start Sector Number dd ? rh4_lsect_lsw dw ? ;Start Sector LSW (32 bit) rh4_lsect_msw dw ? ;Start Sector MSW (32 bit) rh4 ends rh8 struc ;OUTPUT rh8_rh db size rh dup (?) ;Fixed Portion rh8_media db ? ;Media Descriptor from DPB rh8_buf_ofs dw ? ;Offset of Data Transfer Area rh8_buf_seg dw ? ;Segment of Data Transfer Area rh8_count dw ? ;Transfer Count (Sectors) rh8_sector dw ? ;Start Sector Number dd ? rh8_lsect_lsw dw ? ;Start Sector LSW (32 bit) rh8_lsect_msw dw ? ;Start Sector MSW (32 bit) rh8 ends rh12 struc ;OUTPUT IOCTL rh12_rh db size rh dup (?) ;Fixed Portion rh12_media db ? ;Media Descriptor from DPB rh12_buf_ofs dw ? ;Offset of Data Transfer Area rh12_buf_seg dw ? ;Segment of Data Transfer Area rh12_count dw ? ;Transfer Count (Sectors) rh12_sector dw ? ;Start Sector Number rh12 ends rh19 struc ;IOCTL rh19_rh db size rh dup (?) ;Fixed Portion rh19_major db ? ;Major Code rh19_minor db ? ;Minor Code rh19_si dw ? ;Caller SI Register rh19_di dw ? ;Caller DI Register rh19_buf_ofs dw ? ;Caller Buffer Offset rh19_buf_seg dw ? ;Caller Buffer Segment rh19 ends