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Chapter 3 Media Changer Commands
Read Buffer Command (3Ch)
120 Quantum ATL SuperLoader Software Interface Guide
Read Buffer Command (3Ch) 3
The READ BUFFER command is used in conjunction with WRITE
BUFFER as a diagnostic function for testing the device’s data
buffer for possible diagnostic data and for checking the integrity of
the SCSI bus.
Figure 59 Read Buffer
Command Descriptor
Block
Bit
Byte7654 3210
0
Operation Code (3Ch)
1
Logical Unit Number Reserved Mode
2
Buffer ID
3 - 5
(MSB)
Buffer Offset
(LSB)
6 - 8
(MSB)
Allocation Length
(LSB)
9
Unused Reserved Flag Link
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