Operations
6-8
C141-E042-01EN
6.2.2 Logical address
(1) CHS mode
Logical address assignment starts from physical cylinder (PC) 0, physical head
(PH) 0, and physical sector (PS) 1 and is assigned by calculating the number of
sectors per track that is specified by the INITIALIZE DEVICE PARAMETERS
command. If the last sector in a zone of a physical head is used, the track is
switched and the next logical sector is placed in the initial sector in the same zone
of the subsequent physical head.
After the last physical sector of the last physical head is used in the zone, the
subsequent zone is used and logical sectors are assigned from physical head 0 in
the same way.
Figure 6.5 shows an example of 4 heads configuration. (assuming there is no track
skew).
Figure 6.5 Address translation (example in CHS mode)
Summary of Contents for MHA2021AT
Page 1: ...C141 E042 01EN MHA2021AT MHA2032AT DISK DRIVES PRODUCT MANUAL ...
Page 40: ...Installation Conditions 3 12 C141 E042 01EN Figure 3 14 Example 2 of Cable Select ...
Page 45: ...4 3 Circuit Configuration C141 E042 01EN 4 5 Figure 4 2 Circuit Configuration ...
Page 51: ...4 6 Read write Circuit C141 E042 01EN 4 11 Figure 4 4 Read write circuit block diagram ...
Page 136: ...5 4 Command Protocol C141 E042 01EN 5 75 Figure 5 7 Normal DMA data transfer ...
Page 138: ...5 5 Timing C141 E042 01EN 5 77 Figure 5 8 Data transfer timing ...
Page 144: ...6 1 Device Response to the Reset C141 E042 01EN 6 3 Figure 6 1 Response to power on ...
Page 177: ......