01010101100110101010110011010101011001101010101100110101010110011010101011001101010101100110
100110101010110011010101011001101010101100110101010110011010101011001101010101100110101010110011010101011011010101011
10101010110011010101011011010101001101010100110101101101101010100101
1011010101100110011010101011010101111010111
11010101101101010100111110
1101110110110011
0111011110
111101
011
11
1
PC-3000 EXPRESS / UDMA / PORTABLE
Seagate
ACE Lab
F3 architecture
Technical support: [email protected]
Phone: +7 863 201 50 06
ts.acelaboratory.com
45
Fig. 7.9
Fig. 7.10
7.2.
W
ork with Flash ROM image file
If a drive enters the ready state normally, its ROM can be read directly via ATA. If a HDD does not reach readiness but
allows access to the terminal command mode and supports work with System Files, the data can be read from Volume
= 0x0A, File ID = 0x032A. Otherwise ROM reading should be performed via terminal
programmer device (having unsoldered the ROM chip from the controller first). ROM writing is performed in the Boot
Code mode in the utility. You can also write a corrected image in a programmer device.
ROM itself is a complex object based on block structure. It contains servo code that controls positioning and reading,
Custom FW code working with the general ATA commands, and a few blocks of adaptive data. Among the blocks of
adaptive data please note CAP (Controller Adaptive Parameters), RAP (Read Adaptive Parameters), SAP (Servo
Adaptive Parameters), and IAP (Interface Adaptive Parameters). CAP, RAP, SAP are equivalent to the corresponding
DT and data blocks in correspondingly named service information blocks (minor differences are possible – the CAP
module may contain no model name, modules of servo adaptive data may contain more detailed settings). The IAP data
block is a container for flags, such as SpinUp at Power ON (the option is supported by some drives), used during HDD
operation. The container may also be empty if no flag switching took place.
Work with damaged drives often suggests tasks related to the correction of ROM information. These include:
♦
correction of the heads map for work with a damaged magnetic heads stack or scratched surface (pairing the
heads up);
1
You have to specify the terminal baud rate.
