total memory
Richard Goerwitz
goer at sophist.uucp
Sat Mar 17 17:34:58 AEST 1990
In article <2 at grumbly.UUCP> root at grumbly.UUCP (Superuser) writes:
>I have 8 megs of main memory on my SCO Unix 3.2.1 system. When it comes up
>it reports total memory as 7808 k instead of 8192 k. Where is the missing
>384 k?
Hint: Subtract your 384 k from 1024 k (the total amount of memory
addressable by an 8088/6 chip), and presto, you get the answer 640
(the amount of user memory accessible via standard PC architecture).
That "upper" 384 k is used by all PC's and their descendents for
various things like the system BIOS, video memory, etc.
-Richard L. Goerwitz goer%sophist at uchicago.bitnet
goer at sophist.uchicago.edu rutgers!oddjob!gide!sophist!goer
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