IBM Aptiva Handbook page 58

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Set the date and time and determine the condition to halt
BIOS power on self test.
The following are the halt on options.
ALL errors System halts in case of any errors
No errors System won't halt in case of any errors
ALL , But keyboard System halts except the keyboard error
ALL, But diskette Syetem halts except the diskette error
ALL, But disk/key System halts except the diskette or keyboard error
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You can set up some advanced hardware features in this
function. If they are configured incorrectly, the system might
malfunction.
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Determines the internal cache and external cache will be
enabled or disabled. If enabled, the memory access will
speed up.
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Video BIOS Shadow
Determines whether video BIOS will be copied to RAM.
However, it is optional depending on chipset design. Video
Shadow will increase the video speed
Enabled Video shadow is enabled
Disabled Video shadow is disenabled
C8000 - DFFFF Shadow
Determines if the option ROMs will be copied to RAM
Enabled Optional shadow is enabled
Disabled Optional shadow is disenabled
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PNP OS Installed
The BIOS has the capability to automatically configure all of
the boot and Plug and Play compatible devices. However,
this capability applies only when you are using a Plug and
Play Operating system such as Windows 98.
Select "Yes" if you are using a Plug and Play Operating
system.
Setup parameters 6-9