DOS memory manager

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DOS memory manager

A memory manager is software that allows DOS to manage more than one megabyte of memory or to manage its first megabyte more effectively. Since the early days of DOS, third party memory managers, such as QEMM and 386MAX, have used every trick in the book to move TSRs and drivers out of the lower 640K and into the 384K upper memory area (UMA).

Starting with DOS 5, DOS includes its own memory managers. HIMEM.SYS manages extended memory, and EMM386.EXE manages expanded memory. See DOS HIMEM.SYS, DOS EMM386.EXE, DOS Memmaker, memory allocation, PC memory map, EMS, XMS, VCPI and DPMI. Also see PC operating environments.

               DOS Memory Areas
   Conventional memory        0-640K
   Upper memory area (UMA)  640-1024K
   High memory area (HMA)  1024-1088K
   Extended memory         1024 and up
   Expanded memory         Bank switched memory

Popular non-Microsoft memory managers for DOS are QEMM, 386MAX and NETROOM.

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No references found			DOS extensions DOS external command DOS Fastopen DOS FC DOS FCB DOS file DOS file names DOS filters & pipes DOS Find DOS Format DOS hidden file DOS high memory DOS HIMEM.SYS DOS Interlink DOS internal command DOS Join DOS key commands DOS Label DOS laplink DOS Lastdrive DOS Loadfix DOS Loadhigh DOS Md DOS Mem DOS Memmaker DOS memory manager DOS Mirror DOS Mode DOS More DOS Move DOS MSAV DOS MSbackup DOS MSD DOS on Mac Card DOS online help DOS optimizing memory Dos Passos Dos Passos, John Dos Passos, John Randolph Dos Passos, John Roderigo DOS Path DOS Path name DOS Print DOS prompt DOS Protected Mode Interface DOS Rd DOS Recover DOS redirection DOS Rem DOS Rename DOS Replace			DOS file names DOS file transfer DOS files= DOS filters & pipes DOS Find DOS Format DOS hidden file DOS high DOS high memory DOS HIMEM.SYS DOS history DOS Interlink DOS internal command DOS Join DOS key commands DOS Label DOS LAN Requester DOS laplink DOS Lastdrive DOS Loadfix DOS Loadhigh DOS Md DOS Mem DOS Memmaker DOS memory manager DOS Mirror DOS Mkdir DOS Mode DOS More DOS Move DOS MSAV DOS MSbackup DOS MSD DOS multiple startups DOS Navigator Open Source Project DOS on Mac Card DOS online help DOS operating system DOS operating system DOS operating system DOS operating system DOS optimizing memory Dos Palos Branch Library Dos Palos Police Department Dos Passos Dos Passos Dos Passos, John Dos Passos, John (Roderigo) Dos Passos, John (Roderigo) Dos Passos, John Randolph Dos Passos, John Roderigo DOS Path DOS path name DOS pipes

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