home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The World of Computer Software
/
World_Of_Computer_Software-02-385-Vol-1of3.iso
/
z
/
zoomhint.zip
/
ZOOMHINT.EXE
/
MEMORY
< prev
next >
Wrap
Text File
|
1992-12-01
|
1KB
|
35 lines
MEMORY
Memory is not a straightforward computer feature. Normaal memory,
where computer programs run, where the OS (operating system) and
(many) device drivers reside, is limited to 640K. The extra 2meg
or 4 meg is used BY certain programs, which are running in
conventional (640K) memory. They have special features which can
load large blocks of data into that HI (extended/expanded)
memory. Then as the program works on the data, it switches
'pages' of memory (16K blocks) from HI memory into conventional
memory while it works on that section of data. When that section
isn't needed it swaps that back into HI, and gets another peice
to work on. This lets you have HUGE spreadsheets or databases
running yet only have 640K to run the program(s). The more
programs (& TSRs and device drivers) you load, the less room
there is in conventional memory to operate. Somewhere along the
line the system will lock or crash if you keep adding programs
into 640K.