IBM IC35L020 - Deskstar 20 GB Hard Drive - Set Multiple (C6 H); Figure 117. Set Multiple Command (C6 H)

15.30 Set Multiple (C6h)
see below
Status
1 1 0 0 0 1 1 0
Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
V V V V V V V V
Sector Count
see below
Error
- - - - - - - -
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input
Registers
Command Block Output
Registers
V–0––0V000V00000
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
Status RegisterError Register
Figure 117. 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.
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.
Output parameters to the device
Sector Count
This is the block size to be used for Read Multiple and 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.
Deskstar 60 GXP Hard disk drive specification
157