Availability:
     Level E    , 'w'

  Quick Help:
     Slow Write CHS, w[Sec],[NumSecs],[ConSec],[Skip],[UnitOfSkip]
                   
  Description:
    This command writes data to the disk starting at the specified sector on the target
    track for the specified number of sectors.  The sectors are written consecutively
    with the specified number of sectors and then followed by the skip of the specified
    number of sectors to cool down the head. The sectors are written with the data
    contained in the Diagnostic Write Buffer.

  Input Parameters:

    0 - Logical or Physical Sector Address.
    
        If any value is entered for Parameter 5, this parameter contains the physical
        sector address of the first sector to write, else this parameter contains the
        User Area logical sector address of the first sector to write.
    
          Type:    Unsigned 16-bit value
    
          Range:   0 to maximum logical or physical sector address on the target track
    
          Default: 0
    
    1 - Transfer Length.
    
        This parameter specifies the number of total sectors to write.
    
          Type:    Unsigned 32-bit value
    
          Range:   0 to 0xFFFFFFFF
    
          Default: If the Sector Address was entered and the Transfer Length was not
                   entered, then only the specified sector will be written.
    
                   If both the Sector Address and Transfer Length are not entered, then
                   the Transfer Length will be set based on the Test Space that is
                   selected.  If the Random Transfer Length option is selected, a random
                   value will be used that is less than or equal to the number of sectors
                   remaining on the track.  If the Random Transfer Length option is not
                   selected, the number of sectors remaining on the track will be written.
    
                   If a Transfer Length is entered, it will be limited to the number of
                   sectors remaining on the track.
    
    2 - Consecutive Sectors to be Written.
    
        This parameter specifies the number of consecutive sectors to be written
        as a segment.
    
          Type:    Unsigned 32-bit value
    
          Range:   0 to 0xFFFFFFFF
    
          Default: 1
    
    3 - Skip.
    
        This parameter specifies the amount of skip after the specified consecutive
        sector are written.  Its unit is decided by Parameter 4.
    
          Type:    Unsigned 16-bit value
    
          Range:   0 to 0xFFFF
    
          Default: 1
    
    4 - Unit of Skip.
      
        This parameter specifies the unit of skip.  If Parameter 4 is equal to 0, the
        skip is specified in the wedges.  If its value is 1, the skip is specified in
        the sectors. Otherwise, the skip is specified in the time of micro seconds.
    
          Type:    Unsigned 16-bit value
    
          Range:   0 to 0xFFFF
    
          Default: 0 (skip in the wedge)
    
    5 - Physical Sector Address Flag.
      
        If any value is entered for this parameter, then Parameter 0 specifies a physical
        sector address, else Parameter 0 specifies a User Area logical sector address.
    
          Type:    Unsigned 16-bit value
    
          Range:   0 to 0xFFFF
    
          Default: None
    
  Output Data:

    If an error occurred, the following information will be displayed.
    
          "DiagError aaaaaaaa R/W Status c R/W Error dddddddd"
    
       and
    
          "Next User LBA eeeeeeee LLL CHS ffffff.g.hhhh PLP CHS iiiiii.j.kkkk"
          "Remaining Transfer Length llllllll"
    
       or
    
          "Next System LBA eeeeeeee LLL CHS ffffff.g.hhhh PLP CHS iiiiii.j.kkkk"
          "Remaining Transfer Length llllllll"
    
       where
    
          aaaaaaaa is the Diagnostic Error Code
    
          c is the status returned by the R/W subsystem
    
                0 = R/W request completed successfully with error recovery
                1 = R/W request completed successfully (no error recovery performed)
                2 = R/W request failed
    
          dddddddd is the error code returned by the R/W subsystem
    
          eeeeeeee is the Disk Logical Block Address of the sector in error
    
          ffffff is the Logical Cylinder Address of the sector in error
    
          g is the Logical Head Address of the sector in error
    
          hhhh is the Logical Sector Address of the sector in error
    
          iiiiii is the Physical Cylinder Address of the sector in error
    
          j is the Logical Head Address of the sector in error
    
          kkkk is the Physical Sector Address of the sector in error
    
          llllllll is the number of sectors remaining to be read or written
    
    If the Verbose Formatted ASCII Data Output Mode is selected, the Verbose Mode option
    bits will enable the following data to be output when set.
    
       Bit 0:      Enables the R/W Status and R/W Error to be displayed
       Bit 1:      Enable the Next Address to be displayed
       Bit 2:      Enables the Track Position and Track Follow Offset to be displayed
       Bit 3:      Enables the Target Address to be displayed
       Bit 4:      Enables the Recovery Status to be displayed
       Bit 5:      Enables the Fault Status to be displayed
       Bit 6:      Enables the Elapsed Time to be displayed
       Bits 31-7:  NA
    
    If Bit 0 is set, the R/W Status and R/W Error will be displayed even if no error
    occurred.  The data displayed will be formatted as shown above.
    
    If Bit 1 is set, the Next Address will be displayed even if no error occurred.  The
    data displayed will be formatted as shown above.
    
    If Bit 2 is set, the Track Position and Track Follow Offset will be displayed as
    follows.
    
          "Read Position, Persistent Offset m.m% Total Offset n.n%"          or
          "Write Position, Persistent Offset m.m% Total Offset n.n%"         or
          "Write Header Position, Persistent Offset m.m% Total Offset n.n%"
    
       where
    
          m.m is the Persistent Track Follow Offset in units of percentage of track width
    
          n.n is the Total Track Follow Offset in units of percentage of track width
    
    If Bit 3 is set, the Target Address will be displayed as follows.
    
          "Target User LBA pppppppp LLL CHS qqqqqq.r.ssss PLP CHS tttttt.u.vvvv"
          "Starting Transfer Length wwwwwwww"
    
       or
    
          "Target System LBA pppppppp LLL CHS qqqqqq.r.ssss PLP CHS tttttt.u.vvvv"
          "Starting Transfer Length wwwwwwww"
    
       where
    
          pppppppp is the starting Disk Logical Block Address
    
          qqqqqq is the starting Logical Cylinder Address
    
          r is the starting Logical Head Address
    
          ssss is the starting Logical Sector Address
    
          tttttt is the starting Physical Cylinder Address
    
          u is the starting Logical Head Address
    
          vvvv is the starting Physical Sector Address
    
          wwwwwwww is the starting Transfer Length
    
    If Bit 4 is set, the Recovery Status will be displayed as follows.
    
          "Recovered User LBA AAAAAAAA LLL CHS BBBBBB.C.DDDD PLP CHS EEEEEE.F.GGGG"
          "Recovery Flags HHHH Count II"
    
       or
    
          "Recovered System LBA AAAAAAAA LLL CHS BBBBBB.C.DDDD PLP CHS EEEEEE.F.GGGG"
          "Recovery Flags HHHH Count II"
    
       where
    
          AAAAAAAA is the Disk Logical Block Address of the last recovered sector
    
          BBBBBB is the Logical Cylinder Address of the last recovered sector
    
          C is the Logical Head Address of the last recovered sector
    
          DDDD is the Logical Sector Address of the last recovered sector
    
          EEEEEE is the Physical Cylinder Address of the last recovered sector
    
          F is the Logical Head Address of the last recovered sector
    
          GGGG is the Physical Sector Address of the last recovered sector
    
          HHHH are the Recovery Flags reported by the Read/Write code
    
          II is the Recovery Count reported by the Read/Write code
    
    If Bit 5 is set, the Fault Status will be displayed as follows.
    
          "Drive Fault Status JJJJ Preamp Fault Status KKKK"
          "Read Channel Faults:
           SRC Fault Reg 190 = aaaa
           SRC Fault Reg 191 = bbbb
           SID Reg 20B = cccc
           SID Reg 26C = dddd
           SID Reg 26F = eeee
           SID Reg 251 = fffff
    
       where
    
          JJJJ is the Drive Fault Status reported by the Read/Write code
    
          KKKK is the Preamp Fault Status reported by the Read/Write code
    
          aaaa  is the SRC channel fault Register 190h value
    
          bbbb is the SRC channel fault register 191h value
    
          cccc is the SID channel fault register 20bh   value
    
          dddd is the SID channel fault reg 26ch   value
    
          eeee is the SID Channel fault reg 251h value
    
    If Bit 6 is set, the Elapsed Time for the read/write operation will be displayed.

    
       "Elapsed Time a mins b secs"  or
       "Elapsed Time b.c secs"       or
       "Elapsed Time c.d msecs"
    
    where
    
       a is minutes
       b is seconds
       c is milliseconds
       d is microseconds
    
  Examples:
    Example #1:
       To write a single logical sector
       (in this case logical sector 23 on logical cylinder 45 head 1)

          F3 2>A0
          F3 2>S45,1
          F3 E>w23

    Example #2:
       To write multiple logical sectors
       (in this case logical sectors 23 to 26 on logical cylinder 45 head 1)

          F3 2>A0
          F3 2>S45,1
          F3 E>w23,4

    Example #3:
       To write all of the logical sectors on a track
       (in this case all logical sectors on logical cylinder 45 head 1)

          F3 2>A0
          F3 2>S45,1
          F3 E>w

    Example #4:
       To write all of the logical sectors on multiple tracks
       (in this case all logical sectors on logical cylinders 45 to 49 head 0)

       Note: You must seek to the track before the first one to be written.

          F3 2>A3
          F3 2>S44,0
          F3 2>L,5
          F3 E>w

    Example #5:
       To write a single physical sector
       (in this case physical sector 32 on physical cylinder 54 head 0)

          F3 2>A0
          F3 2>s54,0,22
          F3 E>w32,,,,,1

    Example #6:
       To write multiple physical sectors
       (in this case physical sectors 32 to 35 on physical cylinder 54 head 0)

          F3 2>A0
          F3 2>s54,0,22
          F3 E>w32,4,,,,1

    Example #7:
       To write all of the physical sectors on a track
       (in this case all physical sectors on physical cylinder 54 head 0)

          F3 2>A0
          F3 2>s54,0,22
          F3 E>w,,,,,1

  Revision History:

    0001.0000   Initial revision.
    0011.0000   Combined the PSG Diagnostic Error Codes (PSGDEC) and the Diagnostic External
                Test Service Error Codes (DETSEC) into a single set of Diagnostic Error Codes
                (DiagError).
    0011.0001   Added physical sector address flag to write in PLP CHS address mode.