IBM DTCA-24090 Hard Drive Specifications - Page 111

The descriptor value does not match the certain value. except 00h

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Input Parameters From The Device Sector Number In LBA mode, this register specifies current LBA address bits 0-7. ( L = 1 ) Cylinder High/Low In LBA mode, this register specifies current LBA address bits 8 - 15 (Low), 16 - 23 (High) H In LBA mode, this register specifies current LBA address bits 24 - 27. ( L = 1 ) Error The Error Register. An Abort error ( A B T = 1 ) will be returned under the following conditions: The descriptor value does not match the certain value. (except 00h) In LBA mode, this command formats a single logical track including the specified LBA. Explanation for descriptor Descriptor : 00h The sector of data will be initialized to 00h. Byte Data Description 0 1 2 3 4 5 : : N*2 N*2+1 N*2+2 N*2+3 : : 510 511 xxh descriptor value for sector number 00h 00h sector number xxh descriptor value for sector number 01h 01h sector number xxh descriptor value for sector number 02h 02h sector number : : xxh descriptor value for sector number N N sector number (last sector for the track) 00h remainder of buffer filled with 00h 00h : : 00h 00h Descriptor : 00h Format sector as good sector Figure 61. Format track data field format Command Descriptions 103

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Input Parameters From The Device
Sector Number
In LBA mode, this register specifies current LBA address bits 0-7. (L=1)
Cylinder High/Low
In LBA mode, this register specifies current LBA address bits 8 - 15 (Low), 16 - 23
(High)
H
In LBA mode, this register specifies current LBA address bits 24 - 27. (L=1)
Error
The Error Register. An Abort error (ABT=1) will be returned under the following
conditions:
The descriptor value does not match the certain value. (except 00h)
In LBA mode, this command formats a single logical track including the specified LBA.
Explanation for descriptor
Descriptor : 00h
The sector of data will be initialized to 00h.
Byte
Data
Description
0
xxh
descriptor value for sector number 00h
1
00h
sector number
2
xxh
descriptor value for sector number 01h
3
01h
sector number
4
xxh
descriptor value for sector number 02h
5
02h
sector number
:
:
:
:
N*2
xxh
descriptor value for sector number N
N*2+1
N
sector number (last sector for the track)
N*2+2
00h
remainder of buffer filled with 00h
N*2+3
00h
:
:
:
:
510
00h
511
00h
Descriptor :
00h
Format sector as good sector
Figure 61. Format track data field format
Command Descriptions
103