13.31 Set Multiple (C6h)
see belowStatus1 1 0 0 0 1 1 0Command
- - - - - - - -Device/Head1 - 1 D - - - -Device/Head
- - - - - - - -Cylinder High- - - - - - - -Cylinder High
- - - - - - - -Cylinder Low- - - - - - - -Cylinder Low
- - - - - - - -Sector Number- - - - - - - -Sector Number
- - - - - - - -Sector CountV V V V V V V VSector Count
see belowError- - - - - - - -Feature
- - - - - - - -Data- - - - - - - -Data
7 6 5 4 3 2 1 0Register7 6 5 4 3 2 1 0Register
Command Block Input RegistersCommand Block Output Registers
V-0--0V000V00000
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
Status RegisterError Register
Figure 114. Set Multiple command (C6h)
The Set Multiple command enables the device to perform Read and Write Multiple commands and
establishes the block size for these commands. The block size is the number of sectors to be transferred
for each interrupt.
The default block size after power up or hard reset is 0. The Read Multiple and Write Multiple commands
are disabled.
If an invalid block size is specified, an Abort error will be returned to the host. The Read Multiple and Write
Multiple commands will be disabled.
Output Parameters To The Device
Sector Count. This indicates the block size to be used for the Read Multiple and the Write
Multiple commands. Valid block sizes can be selected from 0, 2, 4, 8 or 16. If 0 is
specified, then the Read Multiple and the Write Multiple commands are disabled.
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
167
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