Memory
This cate gory is dis play only and is de ter mined by the BIOS POST (Power On Self
Test).
Base Memory
The POST rou tines in the BIOS will de ter mine the amount of base (or con ven tional)
mem ory in stalled in the sys tem. The value of the base mem ory is typi cally 640K for
sys tems with a Mega byte or greater of RAM in stalled.
Ex tended Memory
The BIOS de ter mines how much ex tended mem ory is pres ent dur ing the POST. This
is the amount of mem ory lo cated above 1MB in the CPU’s mem ory ad dress space.
Other Memory
This re fers to mem ory lo cated in the 640K to 1024K ad dress space. This is mem ory
that can be used for dif fer ent ap pli ca tions. DOS may use this area to load de vice driv ers
and TSRs to keep as much base mem ory free as pos si ble for ap pli ca tion pro grams. The
most com mon use of this area is for Shadow RAM.
3.5
BIOS Features Setup
Vi rus Warning
This op tion when en abled, pro tects the boot sec tor and par ti tion ta ble of the hard disk
against un au thor ized writes through the BIOS. Any at tempt to al ter these ar eas will
re sult in an er ror mes sage and a prompt for authori za tion of the ac tiv ity.
CPU Internal Cache
This option, when enabled, provides maximum performance by caching instructions
and data using the on-chip cache of the 586 processor.
Quick Power On Self Test
This op tion when en abled, speeds up the POST dur ing power up. If it is en abled, the
BIOS will shorten and/or skip some test items dur ing POST.
021402
OPERATIONS MANUAL PCM-586
Page 3-6
WinSystems
- "The Embedded Systems Authority"
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