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Int 0x2F, AH=0x12

2F1200 INT 2F U - DOS 3.0+ internal - INSTALLATION CHECK
2F1201 INT 2F U - DOS 3.0+ internal - CLOSE CURRENT FILE
2F1202 INT 2F U - DOS 3.0+ internal - GET INTERRUPT ADDRESS
2F1203 INT 2F U - DOS 3.0+ internal - GET DOS DATA SEGMENT
2F1204 INT 2F U - DOS 3.0+ internal - NORMALIZE PATH SEPARATOR
2F1205 INT 2F U - DOS 3.0+ internal - OUTPUT CHARACTER TO STANDARD OUTPUT
2F1206 INT 2F U - DOS 3.0+ internal - INVOKE CRITICAL ERROR
2F1207 INT 2F U - DOS 3.0+ internal - MAKE DISK BUFFER MOST-RECENTLY USED
2F1208 INT 2F U - DOS 3.0+ internal - DECREMENT SFT REFERENCE COUNT
2F1209 INT 2F U - DOS 3.0+ internal - FLUSH AND FREE DISK BUFFER
2F120A INT 2F U - DOS 3.0+ internal - PERFORM CRITICAL ERROR INTERRUPT
2F120B INT 2F U - DOS 3.0+ internal - SIGNAL SHARING VIOLATION TO USER
2F120C INT 2F U - DOS 3.0+ internal - OPEN DEVICE AND SET SFT OWNER/MODE
2F120D INT 2F U - DOS 3.0+ internal - GET DATE AND TIME
2F120E INT 2F U - DOS 3.0+ internal - MARK ALL DISK BUFFERS UNREFERENCED
2F120F INT 2F U - DOS 3.0+ internal - MAKE BUFFER MOST RECENTLY USED
2F1210 INT 2F U - DOS 3.0+ internal - FIND UNREFERENCED DISK BUFFER
2F1211 INT 2F U - DOS 3.0+ internal - NORMALIZE ASCIZ FILENAME
2F1212 INT 2F U - DOS 3.0+ internal - GET LENGTH OF ASCIZ STRING
2F1213 INT 2F U - DOS 3.0+ internal - UPPERCASE CHARACTER
2F1214 INT 2F U - DOS 3.0+ internal - COMPARE FAR POINTERS
2F1215 INT 2F U - DOS 3.0+ internal - FLUSH BUFFER
2F1216 INT 2F U - DOS 3.0+ internal - GET ADDRESS OF SYSTEM FILE TABLE ENTRY
2F1217 INT 2F U - DOS 3.0+ internal - GET CURRENT DIRECTORY STRUCTURE FOR DRIVE
2F1218 INT 2F U - DOS 3.0+ internal - GET CALLER'S REGISTERS
2F1219 INT 2F U - DOS 3.0+ internal - SET DRIVE???
2F121A INT 2F U - DOS 3.0+ internal - GET FILE'S DRIVE
2F121B INT 2F U - DOS 3.0+ internal - SET YEAR/LENGTH OF FEBRUARY
2F121C INT 2F U - DOS 3.0+ internal - CHECKSUM MEMORY
2F121D INT 2F U - DOS 3.0+ internal - SUM MEMORY
2F121E INT 2F U - DOS 3.0+ internal - COMPARE FILENAMES
2F121F INT 2F U - DOS 3.0+ internal - BUILD CURRENT DIRECTORY STRUCTURE
2F1220 INT 2F U - DOS 3.0+ internal - GET JOB FILE TABLE ENTRY
2F1221 INT 2F U - DOS 3.0+ internal - CANONICALIZE FILE NAME
2F1222 INT 2F U - DOS 3.0+ internal - SET EXTENDED ERROR INFO
2F1223 INT 2F U - DOS 3.0+ internal - CHECK IF CHARACTER DEVICE
2F1224 INT 2F U - DOS 3.0+ internal - SHARING RETRY DELAY
2F1225 INT 2F U - DOS 3.0+ internal - GET LENGTH OF ASCIZ STRING
2F1226 INT 2F U - DOS 3.3+ internal - OPEN FILE
2F1227 INT 2F U - DOS 3.3+ internal - CLOSE FILE
2F1228BP4200 INT 2F U - DOS 3.3+ internal - MOVE FILE POINTER
2F1229 INT 2F U - DOS 3.3+ internal - READ FROM FILE
2F122A INT 2F U - DOS 3.3+ internal - SET FASTOPEN ENTRY POINT
2F122B INT 2F U - DOS 3.3+ internal - IOCTL
2F122C INT 2F U - DOS 3.3+ internal - GET DEVICE CHAIN
2F122D INT 2F U - DOS 3.3+ internal - GET EXTENDED ERROR CODE
2F122E INT 2F U - DOS 4.0+ internal - GET OR SET ERROR TABLE ADDRESSES
2F122F INT 2F U - DOS 4.x internal - SET DOS VERSION NUMBER TO RETURN
2F1230 INT 2F U - Windows95 - FIND SFT ENTRY IN INTERNAL FILE TABLES
2F1231 INT 2F U - Windows95 - SET/CLEAR "REPORT WINDOWS TO DOS PROGRAMS" FLAG
2F1250 INT 2F U - PTS-DOS - SET MACHINE ID
2F1251 INT 2F U - PTS-DOS - GET MACHINE ID
2F1252 INT 2F U - PTS-DOS 6.51, S/DOS 1.0+ - SET SFT INCREMENT
2F1253 INT 2F U - PTS-DOS 6.51, S/DOS 1.0+ - GET SFT INCREMENT
2F1260 INT 2F C - PTS-DOS 6.51, S/DOS 1.0+ - "EMPTY" (RESERVED FOR INPUT STRING)
2F1261 INT 2F - PTS-DOS 6.51, S/DOS 1.0+ - GET FIRST UMB
2F1262 INT 2F - PTS-DOS 6.51, S/DOS 1.0+ - GET DOS COLOR
2F1263 INT 2F - PTS-DOS 6.51, S/DOS 1.0+ - SET DOS COLOR
2F1270 INT 2F - PTS-DOS 6.51, S/DOS 1.0+ - "SYSBELL" - EMIT A BEEP
2F1271 INT 2F C - PTS-DOS, S/DOS - RESERVED FOR BEEP
2F12F0 INT 2F - PTS-DOS 6.51, S/DOS 1.0+ - BACKDOOR INTERCEPT INT 2Fh CHAIN
2F12F1 INT 2F - PTS-DOS, S/DOS - RESERVED
2F12FFBL00 INT 2F - FreeDOS - FDAK-DDT - INSTALLATION CHECK / STATUS CHECK
2F12FFBL01 INT 2F - FreeDOS - FDAK-DDT - ENABLE FDAK DRIVERS
2F12FFBL02 INT 2F - FreeDOS - FDAK-DDT - DISABLE FDAK DRIVERS
2F12FFBL03 INT 2F - FreeDOS - FDAK-DDT - SWITCH BLOCK DEVICE TO READ-ONLY
2F12FFBL04 INT 2F - FreeDOS - FDAK-DDT - SWITCH BLOCK DEVICE TO READ-WRITE
2F12FFBL05 INT 2F - FreeDOS - FDAK-DDT - TURN ACTIVITY INDICATOR ON
2F12FFBL06 INT 2F - FreeDOS - FDAK-DDT - TURN ACTIVITY INDICATOR OFF
2F12FFBL07 INT 2F - FreeDOS - FDAK-DDT - UNINSTALL
2F12FFBX0000 INT 2F U - DR DOS 6.0+ IBMBIO.COM - QUERY SIZE OF THE BDOS
2F12FFBX0001 INT 2F U - DR DOS 6.0+ IBMBIO.COM - RELOCATE THE BDOS
2F12FFBX0002 INT 2F U - DR DOS 6.0+ IBMBIO.COM - QUERY SIZE OF THE BIOS
2F12FFBX0003 INT 2F U - DR DOS 6.0+ IBMBIO.COM - RELOCATE THE BIOS
2F12FFBX0005 INT 2F U - DR DOS 6.0+ - BOOT PHASE BROADCASTS FOR MEMORYMAX/RPLOADER/SECURITY
2F12FFBX0006 INT 2F U - DR DOS 6+, Novell DOS 7+ - EMM386.EXE - VIDEO MEMORY SPACE CONTROL
2F12FFBX0007 INT 2F U - Novell DOS 7 - SCRIPT.EXE - GET ???
2F12FFBX0009 INT 2F - DR DOS 6.0+ IBMBIO.COM - REGISTER ROOT OF UPPER MEMORY LINK
2F12FFBX0106 INT 2F U - Novell DOS 7+ - MEMORYMAX INSTALLATION CHECK
2F12FFBX0206 INT 2F - Novell DOS 7+ - MEMORYMAX GET PAGE TABLE ENTRY
2F12FFBX0306 INT 2F - Novell DOS 7+ - MEMORYMAX SET PAGE TABLE ENTRY
2F12FFBX0406 INT 2F - Novell DOS 7+ - MEMORYMAX CREATE ACCESS KEY
2F12FFBX0506 INT 2F - Novell DOS 7+ - MEMORYMAX DESTROY ACCESS KEY
2F12FFBL06 INT 2F U - Novell DOS 7 - EMM386.EXE - ???
2F12FFBX0EDC INT 2F U - Novell DOS 7 - EMM386.EXE - CHECK IF MULTITASKING SUPPORT LOADED???

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  Copyright 2000   by Ralf Brown     Updated Jul 2000