Quantum FIREBALL PLUS AS 10.2 - Read Sectors

ATA Bus Interface and ATA Commands
6-30 Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
ERROR OUTPUTS
6.7.2
6.7.26.7.2
6.7.2 Read Sectors
Read SectorsRead Sectors
Read Sectors
COMMAND CODE – 20h
DESCRIPTION – The READ sectors command reads from 1 to 256 sectors,
beginning at the specified sector. As specified in the command block register, a
sector count equal to 0 requests 256 sectors. When the drive accepts this command,
it sets BSY and begins execution of the command.
INPUTS
ERROR OUTPUTS
Register
RegisterRegister
Register 7
77
76
66
65
55
54
44
43
33
32
22
21
11
10
00
0
Error nananananaABRTTK0NFna
Sector Count na
Sector Number na
Cylinder Low na
Cylinder High
Device/ Head obs na obs DEV HEAD number or LBA
Status BSY DRDY na na DRQ na na ERR
Register
RegisterRegister
Register 7
77
76
66
65
55
54
44
43
33
32
22
21
11
10
00
0
Features na
Sector Count Sector count
Sector Number Sector count or LBA
Cylinder Low Cylinder low or LBA
Cylinder High Cylinder high or LBA
Device/ Head obs LBA obs DEV na Head Number or LBA
Command 20h
Register
RegisterRegister
Register 7
77
76
66
65
55
54
44
43
33
32
22
21
11
10
00
0
Error na unc na IDNF na ABRT na na
Sector Count na
Sector Number na
Cylinder Low na
Cylinder High
Device/ Head obs na obs DEV HEAD number or LBA
Status BSY DRDY DF na DRQ na na ERR