Hitachi C4K60 Specifications - Page 64

7.5.9. Format Track [50h] (Vendor Specific) Task File Registers Command LBA High LBA Mid LBA Low Device/Head Sector Count Features 7 6 5 4 3 2 1 0 50h Logical cylinder number bit 15 - 8 Logical cylinder Number bit 7 - 0 XX X 0 X DRV Logical head Number XXh XXh The FORMAT TRACK command formats a single track on the device. Each good sector of data on the track will be initialized to zero with the write operation. The logical track address and head address are specified in the LBA High (Cylinder High), LBA Low (Cylinder Low) and Device/Head Registers. When the command is accepted, the device sets the DRQ bit and waits for the host fill the sector buffer. When the sector buffer is filled with 512 bytes of data, the device clears DRQ, sets BSY, and begins the command execution (Transferred single sector data is ignored). This command is used only in the physical mode, but the physical mode is not released. If the device is not in the physical mode, the device executes a vendor specific operation. 7.5.10. Identify Device [ECh] Task File Registers Command LBA High LBA Mid LBA Low Device/Head Sector Count Features 7 6 5 4 3 2 1 0 ECh XX XX XX X X X DRV X X X X XXh XXh The IDENTIFY DEVICE command enables the host to receive parameter information from the device. When the command is issued, the device sets BSY, stores the required parameter information in the sector buffer, sets DRQ, and generates an interrupt. The host then reads the information from the sector buffer through the Data Register. The parameter words are defined in Table 7.8 and Table 7.9 All reserved bits or words is zero. K6610170 Rev.2 Dec 22, 2004 - 64 -