While doing this:
cdplay> info
track     start  duration   block  length   type
-------------------------------------------------
    1   0:02.00   3:35.57       0   16032  audio
    2   3:35.57   4:15.72   16032   19047  audio
...
   16  70:31.34   3:24.27  317209   15177  audio
  170  73:53.61         -  332386       -      -
cdplay> play
cdplay: Invalid argument
cdplay> volume stereo
cdplay: Invalid argument
cdplay> status volume
Left volume:    255
Right volume:   255

System details:

...
ahc0 at pci0 dev 19 function 0
ahc0: interrupting at apic 2 int 19 (irq 5)
ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs
scsibus2 at ahc0: 16 targets, 8 luns per target
...
scsibus2: waiting 2 seconds for devices to settle...
cd0 at scsibus2 target 1 lun 0: <MATSHITA, PD-2 LF-D100, A113> SCSI2 5/cdrom rem
ovable
cd0: Sync (100.0ns offset 15), 8-bit (10.000MB/s) transfers

Errors:

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x15 10 00 00 00 1c
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x15 10 00 00 00 1c
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x15 10 00 00 00 1c
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x15 10 00 00 00 1c
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x15 10 00 00 00 1c
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x4b 00 00 00 00 00 00 00 00 00
    SENSE KEY:  Illegal Request
 COMMAND INFO:  469762048 (0x1c000000)
     ASC/ASCQ:  Command Sequence Error

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x15 10 00 00 00 1c
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB

cd0(ahc0:0:1:0):  Check Condition on CDB: 0x15 10 00 00 00 1c
    SENSE KEY:  Illegal Request
     ASC/ASCQ:  Illegal Field in CDB