Fujitsu MHV2040AS, MHV2080AS manual Sector Number register X’1F3’, Cylinder Low register X’1F4’

Interface

(5) Sector Number register (X’1F3’)

The contents of this register indicate the starting sector number for the subsequent command. The sector number should be between X’01’ and [the number of sectors per track defined by INITIALIZE DEVICE PARAMETERS command.

Under the LBA mode, this register indicates LBA bits 7 to 0.

Under the LBA mode of the EXT system command, LBA bits 31 to 24 are set in the first setting, and LBA bits 7 to 0 are set in the second setting.

(6) Cylinder Low register (X’1F4’)

The contents of this register indicate low-order 8 bits of the starting cylinder address for any disk-access.

At the end of a command, the contents of this register are updated to the current cylinder number.

Under the LBA mode, this register indicates LBA bits 15 to 8.

Under the LBA mode of the EXT system command, LBA bits 39 to 32 are set in the first setting, and LBA bits 15 to 8 are set in the second setting.

(7) Cylinder High register (X’1F5’)

The contents of this register indicate high-order 8 bits of the disk-access start cylinder address.

At the end of a command, the contents of this register are updated to the current cylinder number. The high-order 8 bits of the cylinder address are set to the Cylinder High register.

Under the LBA mode, this register indicates LBA bits 23 to 16.

Under the LBA mode of the EXT system command, LBA bits 47 to 40 are set in the first setting, and LBA bits 23 to 16 are set in the second setting.

5-10 C141-E221