Datasheet

13.5.14 Read Multiple (C4h)
...See Below...Status00100011Command
HHHH----Device/HeadHHHHD1L1Device/Head
VVVVVVVVCylinder HighVVVVVVVVCylinder High
VVVVVVVVCylinder LowVVVVVVVVCylinder Low
VVVVVVVVSector NumberVVVVVVVVSector Number
VVVVVVVVSector CountVVVVVVVVSector Count
...See Below...Error--------Feature
--------Data--------Data
01234567Register01234567Register
Command Block Input RegistersCommand Block Output Registers
V00-V0V0V0V0V0V0
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCBBK
0123456701234567
Status RegisterError Register
Figure 89. Read Multiple Command (C4h)
The Read Multiple command reads one or more sectors of data from disk media, then transfers the data
from the device to the host.
The sectors are transferred through the Data Register 16 bits at a time. Command execution is identical
to the Read Sectors command except that an interrupt is generated for each block (as defined by the
Set Multiple command) instead of for each sector.
The head number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits 24 - 27. (L=1)
H
The cylinder number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits 8 - 15 (Low), 16 - 23 (High).
(L=1)
Cylinder High/Low
The sector number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits 0 - 7. (L=1)
Sector Number
The number of continuous sectors to be transferred. If zero is specified, then
256 sectors will be transferred.
Sector Count
Output Parameters To The Device
Hard disk drive specification for DSCM-11000/-10512/-10340
107