Lanner electronics IAC-H670 Series, User Manual

 
Chapter3 BIOS Setup 

28 

User’s Manual 

operation at system boot.  The settings are 

Disabled

 or 

Enabled

.  The Optimal and Fail-safe default 

settings are 

Disabled

. 

 
PS/2 Mouse Support: 

When this option is set 

Enabled

, AMIBIOS supports a PS/2 type mouse.  The 

settings are 

Enabled 

or 

Disabled

.    The default setting is 

Disabled

.    System Boot Up Sequence.

System Keyboard: 

This option permits you to configure system with no keyboards. It specifies if error 

messages are displayed if a keyboard is not attached.

Primary Display: 

This option specifies the type of display monitor and adapter in the computer.  The 

settings are 

Mono, CGA40, CGA80, EGA/VGA 

or

 Absent.  

The Optimal and Fail-Safe default settings are 

EGA/VGA.

Password Check: 

This option enables password checking every time the computer is powered on or every 

time WINBIOS Setup is executed.    If 

Always

 is chosen, a user password prompt appears every time the 

computer is turned on.    If 

Setup

 is chosen, the password prompt appears if WINBIOS is executed.    The 

Optimal and Power-On defaults are 

Setup

. 

L1/L2 Cache: 

The item enables or disables the L1/L2 (Internal ) cache memory for CPU. Setting to 

Enabled will speed up the system performance. 
 

System BIOS Cacheable:

 When this option is set to Enabled, the contents of the F0000h system memory 

segment can be read from or written to L2 secondary cache memory. The contents of the F0000h memory 

segment are always copied from the BIOS ROM to system RAM for faster execution.   
 

The settings are 

Enabled

 or 

Disabled

. The Optimal default setting is 

Enabled

. The Fail-Safe default setting is 

Disabled

.  

C000,16K Shadow   

D000,16K Shadow 

C400,16K Shadow   

D400,16K Shadow 

C800,16K Shadow   

D800,16K Shadow 

CC00,16K Shadow   

DC00,16K Shadow 

These options control the location of the contents of the 16KB of ROM beginning at the specified memory 
location. If no adaptor ROM is using the named ROM area, this area is made available to the local bus. The 

settings are: 
 

Setting Description 

  Shadow 

  The contents of C0000h - C3FFFh are written to the same address in   

  System memory (RAM) for faster execution.     

  Cache 

  The contents of the named ROM area are written to the same address in   
  system memory (RAM) for faster execution, if an adaptor ROM will be   

  using the named ROM area. Also, the contents of the RAM area can be   
  read from and written to cache memory. 

 Disabled 

  The video ROM is not copied to RAM. The contents of the video ROM   

  cannot be read from or written to cache memory.     

The default setting is Cache.   

 
In the AMIBIOS for the Intel Triton chipset, the E000h page is used as ROM during POST, but shadowing is 

disabled and the ROM CS# signal is disabled to make the E000h page available on the local bus.