Write Multiple Ext (39H); Set Multiple Mode (C6H) - Toshiba MK3006GAL Specification

10.8.21 Write Multiple EXT (39h)

COMMAND CODE
DR
LBA Current
Low Previous
LBA Current
Mid Previous
LBA Current
High Previous
SC Current
Previous
FT Current
Previous
This command is basically identical to Write Multiple command except register setting.
This command is available in LBA addressing only.

10.8.22 Set Multiple Mode (C6h)

COMMAND CODE
REGISTER SETTING
DR
CY
HD
SN
SC The number of sectors / block
FT
This command enables the drive to perform Read and Write Multiple operations and sets the block count for
these commands.
The Sector Count Register is loaded with the number of sectors per block. The drive supports 1,2,4,8 or16
sectors per block.
Upon receipt of the command, the drive sets BSY=1 and checks the content of Sector Count Register.
If the Sector Count Register contains a valid value and the block count is supported, the value is loaded for
all subsequent Read Multiple and Write Multiple commands. And these commands are enabled to be
executed. If a block count is not supported , this command shall be terminated with the report of an Aborted
Command error , and Read Multiple and Write Multiple commands are disabled.
If the Sector Count Register contains 0 when the command is issued, Read Multiple and Write Multiple
commands are disabled.
In case of software reset, the result depends on the setting of Set Feature command. If FT=66h, the mode
is not changed. If FT = CCh, the mode reverts to power on default (16 sectors).
0 0 1 1 1 0 0 1
REGISTER SETTING
drive no.
LBA(7:0)
LBA(31:24)
LBA(15:8)
LBA(39:32)
LBA(23:16)
LBA(47:40)
sector count(7:0)
sector count(15:8)
reserved
reserved
1 1 0 0 0 1 1 0
drive no.
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REGISTER
NORMAL COMPLETION
no change
HOB=0 last address
HOB=1 last address
HOB=0 last address
HOB=1 last address
HOB=0 last address
HOB=1 last address
HOB=0 00H
HOB=1 00H
HOB=0 no change
HOB=1 no change
REGISTER
NORMAL COMPLETION
no change
no change
no change
no change
no change
no change