Similar to IBM_PC_DOS
DOS MZ executable
DOS MZ executable
Expanded Memory Specification
Expanded memory
Extended Memory Specification
Extended memory
File Allocation Table
File Allocation Table
FreeDOS
FreeDOS
IO.SYS
IO.SYS
PTS-DOS
PTS-DOSQuarterdeck Expanded Memory Manager
QEMMTerminate and Stay Resident
Terminate-and-stay-resident programVirtual Control Program Interface
Virtual Control Program Interface
倚天中文系統
ETen Chinese System
仮想DOSマシン
Virtual DOS machine
Pilot (オペレーティングシステム)
Pilot (operating system)
SQL/DS
IBM SQL/DS
XENIX
Xenix
Xinu
Xinu
ATOK
ATOK▲1 trends
カーミット (プロトコル)
Kermit (protocol)