Read Multiple Sectors - Quantum FIREBALL PLUS AS 10.2 Product Manual

ATA Bus Interface and ATA Commands
PREREQUISITES - DRDY set equal to one. SMART enabled.
DESCRIPTION - Upon issuing of the SMART command sub-code D4 the drive will
begin an off-line testing. Any ECC correctable errors encountered during the off-line
testing of the drive are counted, and upon completion the attribute list is updated
accordingly. Shown below are the off-line data collection status byte values.
Value Value Value Value
00h or 80h
02h or 82h
04h or 84h
05h or 85h
06h or 86h
6.7.10 6.7.10 6.7.10 6.7.10

Read Multiple Sectors

Read Multiple Sectors Read Multiple Sectors Read Multiple Sectors
COMMAND CODE – C4h
DESCRIPTION – The READ MULTIPLE sectors execute similar to the READ
SECTORS command without generating an interrupt (DRQ) on every sector read.
DRQ is only required at the start of the data block. The data block length in sectors
is defined in the SET MULTIPLE command. READ MULTIPLE is only valid when
the READ MULTIPLE commands are enabled.
INPUTS
Register Register Register Register
Features
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/ Head
Command
6-48 Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
Off-line data collection was never started
Off-line data collection was completed without error
Off-line data collection was suspended by an interrupting
command from the host
Off-line data collection was aborted by an interrupting
command from the host
Off-line data collection activity was aborted by the device
7 7 7 7 6 6 6 6 5 5 5 5
na
Sector count
Sector Number or LBA
Cylinder low or LBA
Cylinder high or LBA
obs LBA obs
C4h
Definition Definition Definition Definition
with a fatal error
4 4 4 4 3 3 3 3 2 2 2 2
DEV na Head Number or LBA
1 1 1 1 0 0 0 0