Extended memory
is
memory with addresses in the range lMB to
8MB, and is used only by the following:
Certain operating systems, such as OS/2
Some MS-DOS interfaces, such as Windows
Some RAM disk programs, such as VDISK
Some hard disk caching programs, such as SMARTDRV
Certain specially-written MS-DOS applications.
Use of extended memory requires a memory manager. Most
versions of MS-DOS include a standard extended memory
manager. If you are using MS-DOS, Windows, and other
compatible programs, it is best to use one of the memory managers
(such as HIMEM.SYS) that came with your software because these
memory managers have been tested and proven reliable.
Most MS-DOS commands and application programs cannot use
extended memory directly. They need to use expanded memory,
which uses a portion of reserved memory as a window to access
RAM beyond lMB. This type of memory allows some MS-DOS
applications to get around the 640KB size limitation. You control
expanded memory with a memory manager (such as
EMM386.EXE), which enables the computer to use extended
memory as expanded memory.
Using Your Computer
2-17
Summary of Contents for ActionNote 4SLC2-50
Page 1: ......
Page 3: ...EPSON ActionNote 4SLC2 50 User s Guide ...
Page 122: ...MNP Command Summary continued Fax Modem B 9 ...
Page 123: ...AT Register Summary B 10 FaxlModem ...
Page 125: ...S21 Bitmapped configuration register S22 Bitmapped configuration register B 12 Fax Modem ...
Page 128: ...S82 Break handling affected by K commands Result Code Summary Fax Modem B 15 ...
Page 154: ...400275800 ...
