Epson FILMSCAN 200, Service Manual

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FilmScan 200
REV.-A
1-10
1.3.2.2 Command
This devise use the following group “0” processor commands shown in Table 1-3.
Command Code Description
Test Unit Ready 00h Confirm for operation
Request Sense 03h Require a sense data *1)
Receive 08h Data transmission from target to initiator.
Send 0Ah Data transmission from initiator to target.
Inquiry 12h Require information of SCSI devise *2)
Note *1): Only the extension sense data format is supported for sense data returned by
the request sense command.
Note *2): TheiInquiry data is as follows.
Peripheral devise type: 03h (processor)
RMB: 00h (non-removable media)
Devise type restriction: 00h
ISO version: 00h
ECMA version: 00h
ANSI version: 01h (current version)
Additional length: 23h
Vender unique parameter byte:
(00h, 00h, 00h,.EPSON, 20h, 20h, 20h, “FilmScan”, 20h,'200', 20h, 20h, 20h, 20h, “*. **”,
00h, 00h, 00h, FFh)
Note.. “*.**” ROM version
1.3.2.3 Status
Status values for the SCSI interface are shown in Table 1-4.
Status Status Bits
7 6 5 4 3 2 1 0
Good R 0 0 0 0 0 0 0
Check Condition R 0 0 0 0 0 1 0
Busy R 0 0 0 1 0 0 0
All other codes are reserved.
“R” means reserved bit.
1.3.2.4 Messages
Messages for the SCSI interface are shown in Table 1-5.
Message Code Direction Completion of ATN
Command 00h In -
Disconnect 04h In -
Message Reject 07h In / Out Yes (Out)
Bus Device Reset 0Ch Out Yes
Identify 80h - FFh In / Out No (Out)
Out: Target -> Initiator
In: Initiator -> Target
Table 1-3. Commands
Table 1-4. Status Values
Table 1-5. Messages