Quantum FIREBALL PLUS AS 10.2 User Manual

ATA Bus Interface and ATA Commands
6-50 Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
6.7.12
6.7.126.7.12
6.7.12 Set Multiple Mode
Set Multiple ModeSet Multiple Mode
Set Multiple Mode
COMMAND CODE – C6h
The SET MULTIPLE MODE command enables the controller to perform READ
MULTIPLE and WRITE MULTIPLE operations, and establishes the block count
for these commands.
Prior to issuing a command, the host should load the Sector Count Register with
the number of sectors per block. On receiving this command, the drive sets BSY and
checks the contents of the Sector Count Register.
If the Sector Count Register contains a valid value, and the controller supports
block count, the controller loads the values for all subsequent READ MULTIPLE
and WRITE MULTIPLE commands, and enables execution of these commands.
Any unsupported block count in the register causes an Aborted Command error,
and disables execution of READ MULTIPLE and WRITE MULTIPLE commands.
If the Sector Count Register contains a zero value when the host issues the
command, READ MULTIPLE and WRITE MULTIPLE commands are disabled.
Any unsupported block count in the register causes an aborted command error, and
disables READ MULTIPLE and WRITE MULTIPLE commands. After the
command is executed, the controller clears BSY. At power on, the default mode for
the READ MULTIPLE and WRITE MULTIPLE commands is disabled.
INPUTS
ERROR OUTPUTS
Register
RegisterRegister
Register 7
77
76
66
65
55
54
44
43
33
32
22
21
11
10
00
0
Features na
Sector Count Sectors per block
Sector Number na
Cylinder Low na
Cylinder High na
Device/ Head obs na obs DEV na Head Number or LBA
Command C6h
Register
RegisterRegister
Register 7
77
76
66
65
55
54
44
43
33
32
22
21
11
10
00
0
Error nananananaABRTnana
Sector Count na
Sector Number na
Cylinder Low na
Cylinder High na
Device/ Head obs Na obs DEV na
Status
BSY DRDY DF na DRQ na na ERR

Quantum FIREBALL PLUS AS 10.2 Specifications

General

Brand	Quantum
Model	FIREBALL PLUS AS 10.2
Category	Storage
Language	English