This is part of Family API which allow to create dual-os version of program runs under OS/2 and DOS

Note: This is legacy API call. It is recommended to use 32-bit equivalent

Trace group	Major code	Offset	Mask
Trace	000	0	80
001	40
Mode Transition	002	20
Machine Exception	003	10
Hardware Interrupt	004	08
005	04
006	02
007	01
008	1	80
009	40
010	20
011	10
012	08
013	04
014	02
015	01
Tasking	016	2	80
017	40
Tasking	018	20
019	10
Program Execution Control	020	08
021	04
Program Execution Control	022	02
023	01
Inter-Process Communication	024	3	80
025	40
026	20
027	10
Miscellaneous Services	028	08
029	04
030	02
031	01
Physical Memory Allocator	032	4	80
Physical Memory Compactor	033	40
Swapper	034	20
Swapper	035	10
Virtual Memory Management	036	08
037	04
038	02
039	01
040	5	80
041	40
042	20
043	10
044	08
045	04
046	02
Physical Memory Allocator	047	01
File System	048	6	80
049	40
File System	050	20
051	10
052	08
053	04
054	02
055	01
Timer Services	056	7	80
057	40
058	20
059	10
060	08
061	04
062	02
063	01
064	8	80
065	40
066	20
067	10
068	08
069	04
070	02
071	01
072	9	80
073	40
074	20
075	10
076	08
077	04
078	02
079	01
080	10	80
081	40
082	20
083	10
084	08
085	04
086	02
087	01
088	11	80
089	40
090	20
091	10
092	08
093	04
094	02
095	01
Device Management	096	12	80
Device Help Routines	097	40
Device Help Routines	098	20
099	10
Keyboard Handler	100	08
101	04
102	02
103	01
Disk Device Driver	104	13	80
105	40
Mou Handler	106	20
107	10
Video I/O	108	08
109	04
110	02
111	01
112	14	80
113	40
114	20
115	10
116	08
117	04
118	02
119	01
120	15	80
121	40
122	20
123	10
124	08
125	04
126	02
127	01
Session Manager	128	16	80
Session Manager	129	40
Session Manager	130	20
Message Retriever	131	10
132	08
133	04
134	02
135	01
Queueing	136	17	80
Queueing	137	40
138	20
139	10
140	08
141	04
142	02
Miscellaneous	143	01
144	18	80
145	40
146	20
147	10
148	08
149	04
150	02
151	01
152	19	80
153	40
154	20
155	10
156	08
157	04
158	02
159	01
160	20	80
161	40
162	20
163	10
164	08
165	04
166	02
167	01
168	21	80
169	40
170	20
171	10
172	08
173	04
174	02
175	01
176	22	80
177	40
178	20
179	10
180	08
181	04
182	02
183	01
184	23	80
185	40
186	20
187	10
188	08
189	04
190	02
191	01
192	24	80
193	40
Presentation Manager	194	20
195	10
196	08
197	04
198	02
199	01
200	25	80
201	40
202	20
203	10
204	08
205	04
206	02
207	01
208	26	80
209	40
210	20
211	10
212	08
213	04
214	02
215	01
216	27	80
217	40
218	20
219	10
220	08
221	04
222	02
223	01
224	28	80
225	40
226	20
227	10
228	08
229	04
230	02
231	01
232	29	80
233	40
234	20
235	10
236	08
237	04
238	02
239	01
240	30	80
241	40
242	20
243	10
244	08
245	04
246	02
247	01
248	31	80
249	40
250	20
251	10
252	08
253	04
254	02
255	01
Family API
DOS	Process Manager	DosBeep DosExit DosSleep DosExecPgm
File Manager	DosChDir DosChgFilePtr DosClose DosDelete DosDupHandle DosMkDir DosMove DosQCurDir DosQCurDisk DosSetFileMode DosOpen DosQFileInfo DosRead DosQFileMode DosQFSInfo DosQVerify DosRmDir DosSelectDisk DosFindClose DosFindFirst DosFindNext DosSetFileInfo DosSetVerify DosWrite DosFileLocks DosSetFHandState DosNewSize DosBufReset DosQFHandState DosSetFSinfo DosShutdown
Memory Manager	DosFreeSeg DosSubAlloc DosSubFree DosSubSet DosAllocHuge DosAllocSeg DosReallocHuge DosReallocSeg DosGetHugeShift DosCreateCSAlias
NLS	DosCaseMap DosGetCtryInfo DosGetDBCSEv DosSetCtryCode DosGetCollate DosGetMessage DosInsMessage DosPutMessage
Date and Time	DosSetDateTime DosGetDateTime
Devices	DosDevConfig DosDevIOCtl DosDevIOCtl2
Signals	DosHoldSignal DosSetSigHandler
Misc	BadDynLink DosGetEnv DosGetMachineMode DosGetVersion DosError DosErrClass DosSetVec
KBD	KbdCharIn KbdFlushBuffer KbdGetStatus KbdSetStatus KbdStringIn KbdPeek
VIO	VioGetBuf VioGetConfig VioGetCurPos VioGetCurType VioGetPhysBuf VioReadCellStr VioReadCharStr VioScrollUp VioScrollDn VioScrollLf VioScrollRt VioScrUnLock VioSetCurPos VioSetCurType VioSetMode VioGetMode VioShowBuf VioWrtCellStr VioWrtCharStr VioWrtCharStrAtt VioWrtNAttr VioWrtNCell VioWrtNChar VioWrtTTY VioScrLock VioPopUp
Tools	BIND
Modules	DOSCALLS.DLL VIOCALLS.DLL KBDCALLS.DLL MSG.DLL
Libraries	API.LIB OS2386.LIB FAPI.LIB DOSCALLS.LIB SUBCALLS.LIB