Datasheet

13.5.28 Write DMA (CAh/CBh)
...See Below...StatusR1010011Command
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-VVV000V0V00V
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCBBK
0123456701234567
Status RegisterError Register
Figure 106. Write DMA Command (CAh/CBh)
The Write DMA command transfers one or more sectors of data from the host to the device, then the data
is written to the disk media.
The sectors of data are transferred through the Data Register 16 bits at a time.
The host initializes a slave-DMA channel prior to issuing the command. Data transfers are qualified by
DMARQ and are performed by the slave-DMA channel. The device issues only one interrupt per com-
mand to indicate that data transfer has terminated and status is available.
If an uncorrectable error occurs, the write will be terminated at the failing sector.
Hard disk drive specification for DSCM-11000/-10512/-10340
125