Write Buffer
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2.44
Write Buffer (3Bh)
Operation Code is (3Bh).
Mode specifies meaning of the Buffer Offset field.
Buffer ID is not supported. This byte must be 00h.
Buffer Offset is the byte offset in the buffer where the data shall be stored. This must be 0
through 15.
Transfer Length is the number of bytes to be transferred in the DATA OUT phase. This must
be the data length to be sent plus 4 bytes (header size).
This command is to be used with the READ BUFFER command to test the reliability of the
command buffer memory in the drive, and of the SCSI bus. The drive does not access any discs.
Mode
Definition
00b
Header, data, and buffer offset are 0s.
01b
Buffer offset indicates the offset of the buffer at which data are to be stored.
10b
Reserved
11b
Reserved
The transfer length must include the 4-byte header, therefore, the actual data length to be stored
is the transfer length minus 4 bytes. As the buffer length of the drive is 16 bytes, the maximum
number of bytes that can be specified for Buffer Offset is 15, and the maximum for Transfer
Length is 20.
If Transfer length is larger than 20, a Check Condition is returned with the sense key "ILLEGAL
REQUEST." Check Condition will also be returned if the Buffer Offset + Transfer Length is
larger than 20.
If Buffer Offset is not 0 when Mode is 00h, Check Condition is returned.
Refer to Table 2-38A on the opposite page for the 4-byte header of 00h's must be sent preceding
the test data.
Содержание DR-706S
Страница 2: ...CD ROM SCSI 2 Command Set R e f e r e n c e M a n u a l V e r s i o n 3 1 OB U0077C ...
Страница 36: ...Inquiry 23 this page has been left intentionally blank ...
Страница 71: ...CD ROM SCSI 2 COMMAND REFERENCE MANUAL VERSION 3 1 OB U0077C 58 this page has been left intentionally blank ...
Страница 106: ...Read CD ROM Capacity 93 this page has been left intentionally blank ...
Страница 124: ...Read Sub Channel 111 this page has been left intentionally blank ...
Страница 130: ...Read TOC 117 this page has been left intentionally blank ...
Страница 140: ...Request Sense 127 this page has been left intentionally blank ...
Страница 158: ...Stop Play Scan 145 2 40 Stop Play Scan 4Eh The STOP PLAY SCAN CD ROM Command stops playback of CD ROM audio commands ...
Страница 164: ...Verify 12 151 2 43 Verify 12 AFh Operation code is AFh See VERIFY 10 for complete description of this command ...
Страница 172: ...Read CD DA 159 this page has been left intentionally blank ...