Fujitsu MHM2100AT Manual Do Utilizador

6-8

C141-E104-02EN

(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