Datasheet

Feature 85h is used to disable advanced power management. This results in the same effect as the host
uses features 05h with the Sector Count Register FEh.
13.5.22 Set Multiple (C6h)
...See Below...Status01100011Command
--------Device/Head----D1-1Device/Head
--------Cylinder High--------Cylinder High
--------Cylinder Low--------Cylinder Low
--------Sector Number--------Sector Number
--------Sector CountVVVVVVVVSector Count
...See Below...Error--------Feature
--------Data--------Data
01234567Register01234567Register
Command Block Input RegistersCommand Block Output Registers
V00--0V000V00000
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCBBK
0123456701234567
Status RegisterError Register
Figure 99. 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, and Read Multiple and Write Multiple commands
are disabled.
If an invalid block size is specified, an Abort error will be returned to the host, and Read Multiple and
Write Multiple commands will be disabled.
The block size to be used for Read Multiple and Write Multiple commands.
Valid block sizes can be selected from 0, 1, 2, 4, 8 or 16. If 0 is specified, then
Read Multiple and Write Multiple commands are disabled.
Sector Count
Output Parameters To The Device
Hard disk drive specification for DSCM-11000/-10512/-10340
118