B&R Industries Provit 5000, Руководство пользователя

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Provit 5000 User’s Manual 287
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Software • BIOS for System Unit with Socket 370
Swap Floppy Drive
This field is effective only in systems with two disk drives (IPC5600, see section
"Operating 3.5" Disk Drives").
Selecting Enabled, assigns the drive designation B to drive A and the drive
designation A to drive B .
Boot Up Floppy Seek
When Enabled, BIOS tests (searches for) floppy drives during the POST to
determine whether they have 40 or 80 tracks.
Note Only 360 KByte diskettes have 40 tracks. All diskettes with 720
KByte, 1.2 MByte and 1.44 MByte have 80 tracks. Since very
few modern PCs have 40-track floppy drives, we recommend
that you disable this field to save time.
Boot Up NumLock Status
With this field you can define the state of the NumLock button when booting. When
toggled "On", the numeric keypad generates numbers instead of controlling cursor
operations. When toggled OFF, the control fields are used for the keys (Cursor
Keys, Pos1, End, etc.).
Gate A20 Option
Gate A20 refers to the manner in which the system addresses memory above 1
MB (extended memory). When set to Fast, the system chipset controls Gate A20.
When set to Normal, a pin in the keyboard controller controls Gate A20.
Setting Gate A20 to Fast improves system speed, particularly with OS/2 and
Windows.