This is part of Win16 API which allow to create versions of program from one source code to run under OS/2 and Win16. Under OS/2 program can be running under Win-OS/2 if program is Windows NE executable, and with help on Windows Libraries for OS/2, if it is OS/2 NE executable. Here is a WLO to OS/2 API mapping draft

Windows kernel for 8086 (KERNEL.EXE) doesn't uses DPMI or LDT for memory management. KERNEL.EXE for later versions of Windows emulates selectors functions via segments (like FAPI does), but not so good (mostly functions returns errors). KRNL286.EXE and KRNL386.EXE uses direct LDT manipulations. Kernels for WOW uses DPMI functions. For now, osFree tries to reuse only DPMI (in future it is possible to implement direct LDT manipulation, may be).

Note minimal checked windows version is 1.03.

Ordinal	Name	Description	Status	Version	ECMA-234
Real	Std	Enh
001	FatalExit	Display the current state of Windows and prompts for instructions on how to proceed	1.03	Yes
002	ExitKernel
003	GetVersion	Return the current version of Windows	1.03	Yes
004	LocalInit	Initialize local heap	Yes
005	LocalAlloc	Allocate wBytes bytes of memory from the local heap	1.03	Yes
006	LocalRealloc	Reallocate the local memory block	1.03	Yes
007	LocalFree	Free the local memory block	1.03	Yes
008	LocalLock	Lock the local memory block	1.03	Yes
009	LocalUnlock	Unlock the local memory block	1.03	Yes
010	LocalSize	Retrieve the current size, in bytes, of the local memory block	1.03	Yes
011	LocalHandle	Yes
012	LocalFlags	Return information about the specified local memory block	1.03	Yes
013	LocalCompact	Generate free bytes of memory by compacting, if necessary, the module's local heap	1.03	Yes
014	LocalNotify
015	GlocalAlloc	Allocate memory from the global heap	1.03	Yes
016	GlobalRealloc	Reallocate the global memory block	1.03	Yes
017	GlobalFree	Free the global memory block	1.03	Yes
018	GlobalLock	Retrieve the absolute memory address of the global memory block	1.03	Yes
019	GlobalUnlock	Unlock the global memory block	1.03	Yes
020	GlobalSize	Retrieve the current size, in bytes, of the global memory block	1.03	Yes
021	GlobalHandle	Yes
022	GlobalFlags	Return information1 about the specified global memory block	1.03	Yes
023	LockSegment
024	UnlockSegment
025	GlobalCompact	Generate free bytes of global memory by compacting, if necessary, the system's global heap	1.03	Yes
026	GlobalFreeAll
027	GetModuleName
028	GlobalMasterHandle
029	Yield	halts the current task and starts any waiting task	1.03	Yes
030	WaitEvent
031	PostEvent
032	SetPriority
033	LockCurrentTask
034	SetTaskQueue
035	GetTaskQueue
036	GetCurrentTask	Return the handle of the currently executing task	1.03	Yes
037	GetCurrentPDB	Return current PDB
038	SetTaskSignalProc
039	SetTaskSwitchProc
040	SetTaskInterchange
041	EnableDOS
042	DisableDOS
043	IsScreenGrab
044	BuildPDB
045	LoadModule	Load module	Yes
046	FreeModule	Release module	Yes
047	GetModuleHandle	Retrieve the module handle of the specified module	1.03	Yes
048	GetModuleUsage	Return the reference count of a given module	1.03	Yes
049	GetModuleFileName	Retrieve the name of the executable file from which the specified module was loaded	1.03	Yes
050	GetProcAddress	Retrieve the memory address of the function whose name	1.03	Yes
051	MakeProcInstance	Bind the data segment of the module instance specified to the function pointed	1.03	Yes
052	FreeProcInstance	Frees the function specified from the data segment	1.03	Yes
053	CallProcInstance
054	GetInstanceData	Copy data from a previous instance of an application into the data area of the current instance	1.03	Yes
055	Catch	Catch the current execution environment and copy it the the buffer	1.03	Yes
056	Throw	Restore the execution environment to the values saved in the buffer	1.03	Yes
057	GetProfileInt	Retrieve the value of an integer key from the the Windows initialization file	1.03	Yes
058	GetProfileString	Copy a character string from the user profile into the buffer	1.03	Yes
059	WriteProfileString	Copy the character string into the Windows initialization file	1.03	Yes
060	FindeResource	Determine the location of a resource in the specified resource file	1.03	Yes
061	LoadResource	Load a resource from the executable file associated with the module	1.03	Yes
062	LockResource	Retrieve the absolute memory address of the loaded resource	1.03	Yes
063	FreeResource	Remove a loaded resource from memory by freeing the allocated memory occupied by that resource	1.03	Yes
064	AccessResource	Open the specified resource file and moves the file pointer to the beginning of the specified resource	1.03
065	SizeOfResource	Supply the size in bytes of the specified resource	1.03	Yes
066	AllocResource	Allocate uninitialized memory for the passed resource	1.03	Yes
067	SetResourceHandle	Set up a function to load resources	1.03	Yes
068	InitAtomTable	Initialize an atom hash table and set its size	1.03
069	FindAtom	Search the atom table for the character string	1.03
070	AddAtom	Add the character string to the atom table	1.03
071	DeleteAtom	Delete an atom	1.03
072	GetAtomName	Retrieve a copy of the character string associated with atom	1.03
073	GetAtomHandle
074	OpenFile	Create, open, reopen, or delete a file	1.03	Yes
075	OpenPathname
076	DeletePathname
077	AnsiNext	Move to the next character in a string	1.03	Yes
078	AnsiPrev	Move to the previous character in a string	1.03	Yes
079	AnsiUpper	Convert a string or a character to upper case	1.03	Yes
080	AnsiLower	Convert the given string to lower case	1.03	Yes
081	_lclose	Close the file described by the file handle	Yes
082	_lread	Read a specified number of bytes from a file into memory	Yes
083	_lcreat	Create and open a file, described by FileName, for reading and/or writing	Yes
084	_llseek	Move the current file position pointer of the file	Yes
085	_lopen	Open a file	Yes
086	_lwrite	Write a specified number of bytes of memory to a file	Yes
087	lstrcmp	Compare two strings	Yes
088	lstrcpy	Copy the contents from one string to another	Yes
089	lstrcat	Concatecate the contents of two strings	Yes
090	lstrlen	Determines the length of the string	Yes
091	InitTask
092	GetTempDrive	Return a letter specifying the optimal drive for a temporary file	1.03	Yes
093	GetCodeHandle	Return the handle of the code segment containing the function pointed	1.03
094	DefineHandleTable
095	LoadLibrary	Load the library module contained in the specified file and returns a handle to the loaded module	1.03	Yes
096	FreeLibrary	Free memory occuped by library when module reference count equal to zero	1.03	Yes
097	GetTempFilename	Create a temporary filename	1.03	Yes
098	GetLastDiskChange
099	GetLpErrMode
100	ValidateCodeSegments
101	NoHookDosCall
102	Dos3Call
103	NetbiosCall
104	GetCodeInto
105	GetExeVersion
106	SetSwapAreaSize
107	SetErrorMode	Yes
108	SwitchStackTo
109	SwitchStackBack
110	PatchCodeHandle
111	GlobalWire
112	GlobalUnwire
113	__AHSHIFT
114	__AHINCR
115	OutputDebugString	Yes
116	InitLib
117	OldYield
118	GetTaskQueueDS
119	GetTaskQueueES
120	UndefDynLink
121	LocalShrink	Yes
122	IsTaskLocked
123	KbdRst
124	EnableKernel
125	DisableKernel
126	MemoryFreed
127	GetPrivateProfileInt	Yes
128	GetPrivateProfileString	Yes
129	WritePrivatePRofileString	Yes
130	FileCdr
131	GetDOSEnvironment
132	GetWinFlags	Yes
133	GetExePtr
134	GetWindowsDirectory	Yes
135	GetSystemDirectory	Yes
136	GetDriveType	Yes
137	FatalAppExit	Yes
138	GetHeapSpaces
139	DoSignal
140	SetSigHandler
141	InitTask1
142	GetProfileSectionNames
143	GetPrivateProfileSectionNames
144	CreateDirectory
145	RemoveDirectory
146	DeleteFile
147	SetLastError
148	GetLastError
149	GetVersionEx
150	DirectedYield	Yes
151	WinOldApCall
152	GetNumTasks	Yes
153	???
154	GlobalNotify	Yes
155	GetTaskDS
156	LimitEMSPages
157	GetCurPID
158	IsWinOldApTask
159	GlobalHandleNoRip
160	EMSCopy
161	LocalCountFree
162	LocalHeapSize
163	GlobalLRUOldest	Yes
164	GlobalLRUNewest	Yes
165	A20Proc
166	WinExec	Yes
167	GetExpWinVer
168	DirectResAlloc
169	GEtFreeSpace	Yes
170	AllocCSToDSAlisa
171	AllocDSToCSAlias
172	AllocAlias
173	__ROMBIOS
174	__A000H
175	AllocSelector
176	FreeSelector
177	PrestoChangoSelector
178	__WINFLAGS
179	__D000H
180	LongPtrAdd
181	__B000H
182	__B800H
183	__0000H
184	GlobalDOSAlloc
185	GlobalDOSFree
186	GetSelectorBase
187	SetSelectorBase
188	GetSelectorLimit
189	SetSelectorLimit
190	__E000H
191	GlobalPageLock
192	GlobalPageUnlock
193	__0040H
194	__F000H
195	__C000H
196	SelectorAccessRights
197	GlobalFix	Yes
198	GlobalUnfix	Yes
199	SetHandleCount	Yes
200	ValidateFreeSpaces
201	ReplaceInst
202	RegisterPtrace
203	DebugBreak
204	SwapRecording
205	CVWBreak
206	AllocSelectorArray
207	IsDBCSLeadByte	Yes
310	LocalHandleDelta	Set the number of handle table entries to be allocated when the local heap manager runs out of handle table	1.03
320	IsTask	Yes
323	IsROMModule
324	LogError
325	LogParamError
326	IsROMFile
334	IsBadReadPtr	Yes
335	IsBadWritePtr	Yes
336	IsBadCodePtr	Yes
337	IsBadStringPtr	Yes
347	IsBadHugeWritePtr	Yes
348	hmemcpy
349	_hread
350	_hwrite
353	lstrcpyn	Yes
354	GetAppCompatFlags
355	GetWinDebugInfo
356	SetWinDebugInfo

Not found in exports (check other module later): GlobalDiscard 1.03 LocalDiscard 1.03 LocalFreeze 1.03 LocalMelt 1.03 LockData 1.03 UnLockData 1.03 SetPriority 1.03 AddFontResource 1.03 RemoveFontResource 1.03

Group	Functions
Module manager	GETVERSION GETMODULEHANDLE GETMODULEUSAGE GETMODULEFILENAME GETPROCADDRESS MAKEPROCINSTANCE FREEPROCINSTANCE GETINSTANCEDATA CATCH THROW GETCODEHANDLE LOADLIBRARY
Memory Manager	GlobalAlloc GlobalCompact GlobalDiscard GlobalFree GlobalLock GlobalReAlloc GlobalSize GlobalUnlock GlobalFlags LocalInit LocalAlloc LocalCompact LocalDiscard LocalFree LocalLock LocalFreeze LocalMelt LocalReAlloc LocalSize LocalUnlock LocalHandleDelta LockData UnlockData LocalFlags
Task Scheduler	GetCurrentTask Yield SetPriority
Resource Manager	AddFontResource RemoveFontResource LoadBitmap LoadCursor LoadIcon LoadMenu LoadString LoadAccelerators FindResource LoadResource AllocResource LockResource FreeResource AccessResource SizeofResource SetResourceHandler
String Translation	AnsiUpper AnsiLower AnsiNext AnsiPrev
Atom Manager	InitAtomTable AddAtom DeleteAtom FindAtom GetAtomName
Windows Initialization File	GetProfileInt GetProfileString WriteProfileString
Debugging	FatalExit
File I/O	_lopen _lcreat _llseek _lread _lwrite _lclose OpenFile GetTempFileName GetTempDrive
Registry	RegOpenKey RegCreateKey RegCloseKey RegDeleteKey RegSetValue RegQueryValue RegEnumKey