Viper 60s Theory Of Operation And Maintenance Manual page 122

VIPER SCSI 60, 125
&
150 THEORY OF OPERATION AND MAINTENANCE
5.22.3 Completion Status
i
MESSAGE
DESCRIPTION
OOh Good Status
02h
LOAD
=
1 (Load) • Media is positioned to BOT
• Front Panel Light comes ON
• Unit Attention is set if a cartridge is removed at BOT
• Viper drive remains in any previously set modes, with the
exception of Unload
• Viper drive is ready to perform any appropriate commands
LOAD
=
0 (Unload) • Media is positioned to BOT
RETEN
=
1
IMMED
=
1
Check Condition
:
I
• Front Panel Light goes OFF at BOT
• Unit Attention is not set if a cartridge is removed at BOT
• Viper drive remains in any previously set modes, with the
exception of Load
• Viper drive is ready to perform any appropriate commands
• Media is positioned to BOT, then to EOT, then back to
BOT. After this action, the tension on the tape is equalized
from BOT to EOT and any errors caused by poor tape
tension should be corrected.
• Good Status is returned once the command is transferred
and verified. The requested action may still be in progress,
such as a Retention. If another command is issued during
h" h V' d . . d' I I h
t IS time, t e Iper nve Imme late y comp etes t e new
command and returns Busy Status.
Extended Sense Byte 02
:1
MF~~lI.r.F
i
DESCRIPTION
02h Not Ready • No cartridge in drive
04h
Hardware Error • Parity error either on the SCSI
Bus or the Viper drive
05h Illegal Request • Both IMMED bit and Link bit were
set to
1.
• The COB contained an invalid bit
06h Unit Attention • The cartridge was changed prior
to BOT or at BOT following a
PREVENT or LOAD command
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