IBM DTLA-305040 - Deskstar 41.1 GB Hard Drive, Specifications, Page: 139 / 212

12.11 Read Buffer (E4h)
see below Status 1 1 1 0 0 1 0 0 Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - - Cylinder High - - - - - - - - Cylinder High
- - - - - - - - Cylinder Low - - - - - - - - Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - - Sector Count - - - - - - - - Sector Count
see below Error - - - - - - - - Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input
Registers
Command Block Output
Registers
V – 0 – – 0 V 0 0 0 V 0 0 0 0 0
ERR IDX COR DRQ DSC DF RDY BSY AMN T0N ABT 0 IDN 0 UNC CRC
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
Status Register Error Register
Figure 97. Read Buffer Command (E4h)
The Read Buffer command transfers a sector of data from the sector buffer of device to the host.
The sector is transferred through the Data Register 16 bits at a time.
The sector transferred will be from the same part of the buffer written to by the last Write Buffer com-
mand. The contents of the sector may be different if any reads or writes have occurred since the Write
Buffer command was issued
.
Deskstar 40GV & 75GXP hard disk drive specifications
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