Lucky Star 6P2LX, Руководство пользователя

Страница: 29 / 35

6P2LX
I440LX PAGE 26
DURING HDD ACCESSING, THE IDE CONTROLLER WILL TRANSFORM
THE LOGICAL ADDRESS DESCRIBED BY SECTOR, HEAD & CYLINDER
INTO ITS OWN PHYSICAL ADDRESS INSIDE THE HDD.
THE MAXIMUM HDD SIZE SUPPORTED BY LBA MODE IS 8.4
GIGABYTES WHICH IS OBTAINED BY THE FOLLOWING FORMULA:
NO. CYLINDER (1024)
X NO. HEAD ( 255)
X NO. SECTOR ( 63)
X NO. BYTES PER SECTOR ( 512)
8.4 GIGABYTES
LARGE MODE
EXTENDED HDD ACCESS MODE SUPPORTED BY AWARD SOFTWARE.
SOME IDE HDDS CONTAIN MORE THAN 1024 CYLINDER WITHOUT
LBA SUPPORT (IN SOME CASES, USER DO NOT WANT LBA).
THE AWARD BIOS PROVIDES ANOTHER ALTERNATIVE TO SUPPORT
THESE KINDS OF LARGE MODE:
CYLS. HEAD SECTOR MODE
1120 16 59 NORMAL
560 32 59 LARGE
BIOS TRICKS DOS (OR OTHER OS) THAT THE NUMBER OF CYLINDERS
IS LESS THAN 1024 BY DIVIDING IT BY 2. AT THE SAME TIME, THE
NUMBER OF HEADS IS MULTIPLIED BY 2. A REVERSE
TRANSFORMATION PROCESS WILL BE MADE INSIDE INT 12H IN
ORDER TO ACCESS THE RIGHT HDD ADDRESS THE RIGHT HDD
ADDRESS!
MAXIMUM HDD SIZE:
NO. CYLINDER (1024)
X NO. HEAD ( 32)
X NO. SECTOR ( 63)
X NO. BYTES PER SECTOR ( 512)
1 GIGABYTES