Compal NBLB2, Service Manual

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NBLB2 Service Manual
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7. PC2001
The notebook must meet Microsoft Logo requirements in accordance with the
PC2001 Guide and the Microsoft Logo test programs.
8. Miscellaneous Features
8.1 Single BIOS ROM
The System BIOS and Keyboard BIOS are separately
The Size of System BIOS is 2MByte Include BIOS and Ignition ME)
The Size of Keyboard BIOS is 128K (eeprom is inside EC BIOS area)
8.2 USB Support
This feature allows the use of a USB keyboard to access BIOS Setup and to be
used in DOS without additional drivers. USB floppy boot and Crisis Recovery from
USB floppy is also supported. The driver provides other USB devices support after
loading the operating system.
8.3 Flash utility
– one BIOS ROM only
The flash utility can be used to program both system and keyboard BIOS at the
same time.
8.4 Crisis Recovery
This feature provides an opportunity for system that cannot boot up. With a crisis
floppy diskette, the system can perform crisis recovery by using internal PS2
keyboard.
To perform crisis recovery using keyboard, do the following:
Power off the system.
Plug-in the USB floppy drive with crisis floppy diskette inserted.
Hold down Fn + B keys.
Plug-in AC adapter and make sure it is powered.
Power on the system from off state (i.e. cold boot) while holding down <Fn+B> key.
After POST, release <Fn+B> key. The system should boot from floppy and perform
crisis recovery action.
8.5 VGA Support
This section describes the expected behavior when a video monitor is connected
to the VGA port on the notebook .The feature needs VGA driver support
The BIOS will use both the RGB and pin 11 methods to determine the presence of
an external VGA monitor.
Video modes supported on the secondary display path (need VGA driver
support)
Supported video modes and timings please refer to the technical reference of VGA
vendor. In particular, text mode and standard VGA modes are not supported.