What's New as of April 27th, 1995

Changes For This Release

The following changes have been made to scu for this release:

Within Compaq, the updated scu kits are located @ URL:

http://www.zk3.dec.com/~rmiller/scu.html


Mail Send mail to admin of this page: [email protected] Home To Robin's home page.

Last modified: December 29th, 1999


Examples:


og% scu -f /dev/rrz1c
scu> show nexus
Device: RZ29B, Bus: 0, Target: 1, Lun: 0, Type: Direct Access
scu> show edt lun 0
CAM Equipment Device Table (EDT) Information:

    Device: RZ28    Bus: 0, Target: 0, Lun: 0, Type: Direct Access
    Device: RZ29B   Bus: 0, Target: 1, Lun: 0, Type: Direct Access
    Device: RZ26    Bus: 0, Target: 2, Lun: 0, Type: Direct Access
    Device: RZ28    Bus: 0, Target: 3, Lun: 0, Type: Direct Access
    Device: TLZ06   Bus: 0, Target: 5, Lun: 0, Type: Sequential Access
    Device: RRD43   Bus: 0, Target: 6, Lun: 0, Type: Read-Only Direct Access
scu> 
scu> show pages supported
Mode Pages Supported by Device /dev/rrz1c (RZ29B):

           Error Recovery Page (0x01), Page Length 10 (0x0a), Saveable Yes
     Disconnect/Reconnect Page (0x02), Page Length 14 (0x0e), Saveable Yes
     Direct Access Format Page (0x03), Page Length 22 (0x16), Saveable Yes
      Rigid Disk Geometry Page (0x04), Page Length 22 (0x16), Saveable Yes
    Verify Error Recovery Page (0x07), Page Length 10 (0x0a), Saveable Yes
            Cache Control Page (0x08), Page Length 18 (0x12), Saveable Yes
             Control Mode Page (0x0a), Page Length  6 (0x06), Saveable Yes
      Notch and Partition Page (0x0c), Page Length 22 (0x16), Saveable Yes
            CD-ROM Device Page (0x0d), Page Length 10 (0x0a), Saveable Yes
          Vendor Specific Page (0000), Page Length  2 (0x02), Saveable Yes

scu> set paging off
scu> show pages

Mode Parameter Header:

                 Mode Data Length: 170
                      Medium Type: 0 (Default Medium Type)
        Device Specific Parameter: 0x10 (Target Supports DPO & FUA bits)
          Block Descriptor Length: 8

Mode Parameter Block Descriptor:

                     Density Code: 0
         Number of Logical Blocks: 8380080
             Logical Block Length: 512

Error Recovery Parameters (Page 1 - current values):

Page Header:
                        Page Code: 0x1
               Parameters Savable: Yes
                      Page Length: 10
         Disable Correction (DCR): No
  Disable Transfer on Error (DTE): No
     Post Recoverable Error (PER): Yes
    Enable Early Correction (EEC): No
             Read Continuous (RC): No
              Transfer Block (TB): Yes
 Automatic Read Allocation (ARRE): No
Automatic Write Allocation (AWRE): No
                 Read Retry Count: 33
                  Correction Span: 48 bits
                Head Offset Count: 0
         Data Strobe Offset Count: 0
                Write Retry Count: 3
              Recovery Time Limit: 65535ms

Disconnect/Reconnect Parameters (Page 2 - current values):

Page Header:
                        Page Code: 0x2
               Parameters Savable: Yes
                      Page Length: 14
                Buffer Full Ratio: 128/256 (50%)
               Buffer Empty Ratio: 128/256 (50%)
             Bus Inactivity Limit: 1000us
            Disconnect Time Limit: 0 (No Limit)
               Connect Time Limit: 0 (No Limit)
               Maximum Burst Size: 0 (No Limit)
       Data Transfer Disc Control: 0 (Disconnect control not used)

Direct Access Format Parameters (Page 3 - current values):

Page Header:
                        Page Code: 0x3
               Parameters Savable: Yes
                      Page Length: 22
                  Tracks per Zone: 21
       Alternate Sectors per Zone: 9
        Alternate Tracks per Zone: 0
      Alternate Tracks per Volume: 21
                Sectors per Track: 113
   Data Bytes per Physical Sector: 512
                       Interleave: 1
                       Track Skew: 9
                    Cylinder Skew: 16
               Surface Addressing: 0
                  Removable Media: No
               Hard Sector Format: Yes

Rigid Disk Geometry Parameters (Page 4 - current values):

Page Header:
                        Page Code: 0x4
               Parameters Savable: Yes
                      Page Length: 22
      Maximum Number of Cylinders: 3708
          Maximum Number of Heads: 20
  Write Precomp Starting Cylinder: 0
   Reduced Write Current Cylinder: 0
                  Drive Step Rate: 0 (Targets' default)
            Landing Zone Cylinder: 0 (Targets' default)
      Rotational Position Locking: 0 (Disabled or not supported)
                Rotational Offset: 0 (Not used)
             Medium Rotation Rate: 7200 rpm

Verify Error Recovery Parameters (Page 7 - current values):

Page Header:
                        Page Code: 0x7
               Parameters Savable: Yes
                      Page Length: 10
                           Byte 2: 0
                           Byte 3: 0x21
                           Byte 4: 0x30
                           Byte 5: 0
                           Byte 6: 0
                           Byte 7: 0
                           Byte 8: 0
                           Byte 9: 0
                          Byte 10: 0xff
                          Byte 11: 0xff

Cache Control Parameters (Page 8 - current values):

Page Header:
                        Page Code: 0x8
               Parameters Savable: Yes
                      Page Length: 18
         Read Cache Disable (RCD): No
       Multiplication Factor (MF): No
         Write Cache Enable (WCE): No
         Write Retention Priority: 0 (Not distiguished)
   Demand Read Retention Priority: 0 (Not distiguished)
 Disable Prefetch Transfer Length: 65535 blocks
                 Minimum Prefetch: 0 blocks
                 Maximum Prefetch: 159 blocks
         Maximum Prefetch Ceiling: 612 blocks

Control Mode Parameters (Page A - current values):

Page Header:
                        Page Code: 0xa
               Parameters Savable: Yes
                      Page Length: 6
   Report Log Exception Condition: No
              Disable Tag Queuing: No
           Queue Error Management: No
         Queue Algorithm Modifier: 0x1 (Unrestricted re-ordering allowed)
         Error Asynchronous Event: No
       Unit Attention Async Event: No
           Unit Ready Async Event: No
   Extended Contingent Allegiance: Disabled
    Unit Ready AEN Holdoff Period: 0ms

Notch and Partition Parameters (Page C - current values):

Page Header:
                        Page Code: 0xc
               Parameters Savable: Yes
                      Page Length: 22
                           Byte 2: 0x80
                           Byte 3: 0
                           Byte 4: 0
                           Byte 5: 0x1d
                           Byte 6: 0
                           Byte 7: 0
                           Byte 8: 0
                           Byte 9: 0
                          Byte 10: 0
                          Byte 11: 0
                          Byte 12: 0
                          Byte 13: 0xe
                          Byte 14: 0x7f
                          Byte 15: 0x14
                          Byte 16: 0
                          Byte 17: 0
                          Byte 18: 0
                          Byte 19: 0
                          Byte 20: 0
                          Byte 21: 0
                          Byte 22: 0x10
                          Byte 23: 0

CD-ROM Device Parameters (Page D - current values):

Page Header:
                        Page Code: 0xd
               Parameters Savable: Yes
                      Page Length: 10
      Inactivity Timer Multiplier: 0 = Stay in hold track state for Vendor Specific
    Number of S-units per M-units: 0
    Number of F-units per S-units: 0

Vendor Specific Parameters (Page 0 - current values):

Page Header:
                        Page Code: 0
               Parameters Savable: Yes
                      Page Length: 2
                           Byte 2: 0x20
                           Byte 3: 0
scu> set debug on
scu> set page cache
SCSI Cmd = 'mode sense', CDB length = 6, CDB bytes: 1a 0 48 0 20 0
'mode sense' completed, CAM status = 0x1 (CCB request completed w/out error)
Data received for 'mode sense' command:

    0x140048aa0  1f 00 10 08 00 7f de b0 00 00 02 00 88 12 0d 00
    0x140048ab0  00 00 ff ff ff ff 00 00 a0 ff 00 00 00 00 00 00

Completing 'mode sense' command with status 0 (SUCCESS).
SCSI Cmd = 'mode sense', CDB length = 6, CDB bytes: 1a 0 88 0 20 0
'mode sense' completed, CAM status = 0x1 (CCB request completed w/out error)
Data received for 'mode sense' command:

    0x140048a70  1f 00 10 08 00 7f de b0 00 00 02 00 88 12 00 00
    0x140048a80  ff ff 00 00 00 9f 02 64 80 03 00 00 00 00 00 00

Completing 'mode sense' command with status 0 (SUCCESS).
Setting Cache Control Parameters (Page 8)
SCSI Cmd = 'mode select', CDB length = 6, CDB bytes: 15 11 0 0 20 0
Data sent for 'mode select' command:

    0x140048ad0  00 00 00 08 00 7f de b0 00 00 02 00 08 12 00 00
    0x140048ae0  ff ff 00 00 00 9f 02 64 80 03 00 00 00 00 00 00

'mode select' completed, CAM status = 0x1 (CCB request completed w/out error)
Completing 'mode select' command with status 0 (SUCCESS).
scu> ! pwd
scu> shell
#
# exit
scu> sw /dev/rrz0c
Switching to device entry /dev/rrz0c (RZ28)...
scu> show inquiry
SCSI Cmd = 'inquiry', CDB length = 6, CDB bytes: 12 0 0 0 64 0
'inquiry' completed, CAM status = 0x1 (CCB request completed w/out error)
Data received for 'inquiry' command:

    0x140060180  00 00 02 02 5b 00 00 16 44 45 43 20 20 20 20 20
    0x140060190  52 5a 32 38 20 20 20 20 20 28 43 29 20 44 45 43
    0x1400601a0  34 34 32 44 30 30 30 30 34 32 38 35 34 30 36 36
    0x1400601b0  00 00 00 00 00 00 13 21 06 00 00 00 00 00 00 00
    0x1400601c0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x1400601d0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Completing 'inquiry' command with status 0 (SUCCESS).
Command 'get inquiry data' completed with residual count of 4.
Inquiry Information:

           Peripheral Device Type: Direct Access
             Peripheral Qualifier: Peripheral Device Connected
             Device Type Modifier: 0
                  Removable Media: No
                     ANSI Version: SCSI-2 Compliant
                     ECMA Version: 0
                      ISO Version: 0
             Response Data Format: ANSI SCSI-2
            Terminate I/O Process: 0
        Asynchronous Notification: 0
                Additional Length: 91
               Soft Reset Support: No
          Command Queuing Support: Yes
          Target Transfer Disable: Yes
           Linked Command Support: No
       Synchronous Data Transfers: Yes
     Support for 16 Bit Transfers: No
     Support for 32 Bit Transfers: No
      Relative Addressing Support: No
            Vendor Identification: DEC     
           Product Identification: RZ28     (C) DEC
          Firmware Revision Level: 442D
              Drive Serial Number: 000042854066
             Vendor Specific Data: 30 30 30 30 34 32 38 35 34 30 36 36
                                   00 00 00 00 00 00 13 21 06 00 00 00
                                   00 00 00 00 00 00 00 00 00 00 00 00
                                   00 00 00 00 00 00 00 00 00 00 00 00
                                   
scu> exit

% scu -f /dev/rrz9c scu> help set . . . set audio Set parameters for a CD-ROM audio device. Format: { address format { lba | msf } } scu> set audio { density { hex-code | density-code } } { length block-length } { volume [ channel-{ 0 | 1 } ] level n } Notes: o Some CD-ROM's do not permit altering the density and/or block length fields. For example, the DEC RRD42 (Sony CDU-541) CD-ROM does not allow this, while the DEC RRD43/ RRD44 (Toshiba) CD-ROM's do allow this. Aliases: The alias 'cdrom' is accepted for the 'audio' keyword', since this commands now controls both audio and CD-ROM parameters. Subtopics available: address density length volume set audio subtopic: density set audio density Allows the density and/or block length to be changed. In the case of the Toshiba XM-3401TA (RRD43/RRD44) CD-ROM's, setting the correct density allows audio data to be read via the 'read media' command. [ Hmmm... now that I can read this data what should I do with it? ] Format: scu> set cdrom density { hex-code | density-string } Where 'density-string' is one of the following: String Density Code Block Length ------ ------------ ------------ default 0x0 512 xa-support 0x81 2048 cd-da 0x82 2352 mode1-xa 0x83 2048 Notes: o The hex codes > 0x80 are vendor unique (Toshiba here). o You must set the density to 'cd-da' to read audio data. o Reading of audio data can only be done with 'read media' at this time, since 'scu' honors the device block size. o If you set the density to 'cd-da', you will NOT be able to access the CD-ROM with the normal CAM disk driver. [ The disk driver doesn't change the density code, so attempts to set the block size to 512 will fail. ] o To be safe, set the density code to 'default' when you are done reading audio data. scu> show inquiry Inquiry Information: Peripheral Device Type: Read-Only Direct Access Peripheral Qualifier: Peripheral Device Connected Device Type Qualifier: 0 Removable Media: Yes ANSI Version: SCSI-2 Compliant ECMA Version: 0 ISO Version: 0 Response Data Format: ANSI SCSI-2 Terminate I/O Process: 0 Asynchronous Notification: 0 Additional Length: 91 Soft Reset Support: No Command Queuing Support: No Linked Command Support: Yes Synchronous Data Transfers: Yes Support for 16 Bit Transfers: No Support for 32 Bit Transfers: No Relative Addressing Support: Yes Vendor Identification: TOSHIBA Product Identification: CD-ROM XM-3401TA Firmware Revision Level: 1094 Vendor Specific Data: 48 52 47 49 57 47 57 52 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 scu> show audio toc Table of Contents Summary: Track 1: Audio Track, Time: 06:53, LBA: 0, Length: 124141 Track 2: Audio Track, Time: 05:13, LBA: 124140, Length: 93781 Track 3: Audio Track, Time: 05:21, LBA: 217920, Length: 96389 Track 4: Audio Track, Time: 07:00, LBA: 314308, Length: 125873 Track 5: Audio Track, Time: 04:38, LBA: 440180, Length: 83329 Track 6: Audio Track, Time: 03:24, LBA: 523508, Length: 61253 Track 7: Audio Track, Time: 06:56, LBA: 584760, Length: 124949 Track 8: Audio Track, Time: 03:33, LBA: 709708, Length: 63753 Track 9: Audio Track, Time: 07:38, LBA: 773460, Length: 137629 There are 9 audio tracks and 0 data tracks, with a total time of 50:36. scu> show mode Mode Parameters (Page 0 - current values): Mode Parameter Header: Mode Data Length: 11 Medium Type: 0 = Default Medium Type Device Specific Parameter: 0 Block Descriptor Length: 8 Mode Parameter Block Descriptor: Density Code: 0x83 = Mode-1 and XA Form-1 Support Number of Logical Blocks: 0 Logical Block Length: 512 scu> set cdrom density cd-da scu> show mode Mode Parameters (Page 0 - current values): Mode Parameter Header: Mode Data Length: 11 Medium Type: 0 = Default Medium Type Device Specific Parameter: 0 Block Descriptor Length: 8 Mode Parameter Block Descriptor: Density Code: 0x82 = CD-DA SCSI Transfer Mode Number of Logical Blocks: 0 Logical Block Length: 2352 scu> scu> set watch off scu> read media starting 0 length 100 compare off > audio.dat Reading 100 blocks on /dev/rrz9c (RZxx)... scu> set cdrom density default scu> show mode Mode Parameters (Page 0 - current values): Mode Parameter Header: Mode Data Length: 11 Medium Type: 0 = Default Medium Type Device Specific Parameter: 0 Block Descriptor Length: 8 Mode Parameter Block Descriptor: Density Code: 0 = Default Density Code Number of Logical Blocks: 0 Logical Block Length: 512 scu> exit % ls -ls audio.dat 240 -rw-r--r-- 1 rmiller system 235200 Dec 22 12:07 audio.dat %