Operations
6-8
C141-E104-03EN
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 of a physical track is used, the track is switched and
the next logical sector is placed in the initial sector of the subsequent physical
track.
Figure 6.5 shows an example of 6 heads configuration. (assuming there is no track
skew).
LS2
LS1
LS1
LS1
LS
63
Physical head 0
Physical cylinder 0
127
126
64
63
62
LH8
LH1
LH0
3
2
1
Physical sector
LS
63
LS
63
505 506
504
LS4
LS3
LS
63
ex: Zone 0 in 6-head device
Physical parameter
– Physical head: 0 to 5
– Physical sector: 1 to 506
Specification of INITIALIZE DEVICE PARAMETERS command
– Logical head: 0 to 15
– Logical sector: 1 to 63
Physical head 0
Physical cylinder 1
61 62
LH9
LH8
2
1
Physical sector
LS2
LS1
Figure 6.5 Address translation (example in CHS mode)
Summary of Contents for DISK DRIVES MHL2300AT
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Page 40: ...3 1 Dimensions C141 E104 03EN 3 3 Figure 3 1 Dimensions MHM series 2 2 ...
Page 52: ...3 4 Jumper Settings C141 E104 03EN 3 15 Figure 3 16 Example 2 of Cable Select drive drive ...
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Page 185: ...Interface 5 108 C141 E104 03EN Figure 5 10 Data transfer timing ...
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