SCSI MESSAGES
M2488 PRODUCT GUIDE
3-8
CG00000-011503 REV. A
April 1997
3-2.8
INITIATOR DETECTED ERROR code 05h
This message is sent from an initiator to inform a target an error (e.g., parity error) has occurred that
does not preclude the target from retrying the operation. Although present pointer integrity is not
assured, a RESTORE POINTERS message or a disconnect followed by a reconnect, causes the
pointers to be restored to their defined prior state.
The message is rejected unless it occurs immediately following a DATA or STATUS TRANSFER
phase.
3-2.9
LINKED COMMAND COMPLETE code 0Ah
This message is sent by a target to an initiator to indicate the completion and execution of a linked
command and status was sent. The initiator sets the pointers to the initial state for the next linked
command.
3-2.10
LINKED COMMAND COMPLETE (WITH FLAG) code 0Bh
This message is sent from a target to an initiator to indicate the execution of a linked command, with
the flag bit set to one, has completed and that status was sent. The initiator sets the pointers to the ini-
tial state of the next linked command. Typically this message is used to cause an interrupt in the initi-
ator between two linked commands.
3-2.11
MESSAGE PARITY ERROR code 09h
This message is sent from the initiator to the target to indicate one or more bytes in the last message
it received had a parity error.
In order to indicate its intentions of sending this message, the initiator asserts the ATN signal prior to
its release of ACK for the REQ/ACK handshake of the message that has the parity error. This pro-
vides an interlock so the target can determine which message has the parity error.
The message is rejected unless it occurs immediately following a MESSAGE IN phase.
3-2.12
MESSAGE REJECT code 07h
This message is sent from either the initiator or target indicating the last message it received was
inappropriate or was not implemented.
In order to indicate its intentions of sending this message, the initiator asserts the ATN signal prior to
its release of ACK for the REQ/ACK handshake of the message that is to be rejected. If the target
receives this message under any other circumstance, the target rejects this message.
Table 3-2. Ignore Field Description
IGNORE
INVALID DATA BITS
32-BIT TRANSFERS
16-BIT TRANSFERS
00h
Reserved
Reserved
01h
DB (31-24)
DB (15-8)
02h
DB (31-16)
Reserved
03h
DB (31-8)
Reserved
04-FFh
Reserved
Reserved
Содержание M2488
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