Quantum ATL SuperLoader ATL, Руководство пользователя

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Chapter 2 Messages
Message Format
Quantum ATL SuperLoader Software Interface Guide 11
Two-byte messages consist of two consecutive bytes. The value of
the first byte, as defined in table 1 , determines which message is to
be transmitted. The second byte is a parameter byte that is used as
defined in the message description.
A value of 1 in the first byte indicates the beginning of a multiple-
byte extended message. The minimum number of bytes sent for an
extended message is three. The extended message format is shown
in figure 1 and the data fields are described in table 3 .
EXTENDED MESSAGE
(Synchronous Data and Wide
Data Transfer Requests) *
01h In Out
IDENTIFY 80h – FFh In Out
IGNORE WIDE RESIDUE 23h In
INITIATOR DETECTED
ERROR
05h Out
LINKED COMMAND
COMPLETE
0Ah In
LINKED COMMAND
COMPLETE (with flag)
0Bh In
MESSAGE PARITY ERROR 09h Out
MESSAGE REJECT 07h In Out
NO OPERATION 08h Out
RESTORE POINTERS 03h In
SAVE DATA POINTER 02h In
*
Extended message ( figure 1 ).
Message Message Code Direction