MAI Basic Four 2000 Series, Service Manual

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BFISD 8079
Reserved (Class 1, Opcode 26) - This opcode is not used.
Reserved (Class 1, Opcode 27) - This opcode is not used.
Reserved (Class 1, Opcode 28) - This opcode is not used.
Reserved (Class 1, Opcode 29) - This opcode is not used.
Reserved (Class 1, Opcode 2A) - This opcode is not used.
Reserved (Class 1, Opcode 2B) - This opcode is not used.
Reserved (Class 1, Opcode 2C) - This opcode is not used.
Reserved (Class 1, Opcode 2D) - This opcode is not used.
Write and Verify (Class 1, Opcode 2E) - This command is similar to the
traditional "read after write" function. It is an extended address com-
mand that operates like a WRITE command over the specified number of
blocks and then verifies the data written on a block by block basis. The
verify function transfers no data to the host.
Since no data is transferred to the host during verify, correctable data
checks will be treated in the same manner as uncorrectable data checks.
d = drive, 0 or 1
BIT 7 6 5 4 3 2 1 0
Byte 0 0 0 1 0 1 1 1 0
Byte 1 0 0 d 0 0 0 0 0
Byte 2, Logical Block Address (MSB)
Byte 3 Logical Block Address
Byte 4 Logical Block Address
Byte 5 Logical Block Address (LSB)
Byte 6 0 0 0 0 0 0 0 0
Byte 7 Number of Blocks
Byte 8 Number of Blocks
Byte 9 0 0 0 0 0 0 0 0
Verify (Class 1, Opcode 2F) - This command is similar to the previous
WRITE AND VERIFY except that it verifies the ECC of an already existing
set of data blocks.
It is the responsibility of the host to provide data for rewriting and
correcting when an error is detected.
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