Int 21 Fn 4B60 - Virus - "plastique-2576"/"anticad-2576" - ???
Int 21 Fn 4B80 - Dr Dos V3.41 - Run Already-loaded Kernel File
Int 21 Fn 4B87 - Virus - "shirley" - Installation Check
Int 21 Fn 4B95 - Virus - "zherkov-1882" - Installation Check
Int 21 Fn 4BA7 - Virus - "1876"/"dash-em" - Installation Check
Int 21 Fn 4BAA - Virus - "nomenklatura" - Installation Check
Int 21 Fn 4BAF - Virus - "948"/"screenplus1", "magnitogorsk" - Installation
Int 21 Fn 4BB1 - Virus - "uzzy" -installation Check
Int 21 Fn 4BDD - Virus - "lozinsky"/"zherkov" - Installation Check
Int 21 Fn 4BEE - F-driver.sys V1.14+ - Grab Int 21
Int 21 Fn 4BF0 - Diet V1.10+ (overlay Mode) - Installation Check
Int 21 Fn 4BF1 - Diet V1.10+ (overlay Mode) - Expand Program???
Int 21 Fn 4BF1 - Virus - "jerusalem 2" - Installation Check
Int 21 Fn 4BFE - Virus - "hitchcock", "dark Avenger-1028", "1193" - Install
Int 21 Fn 4BFF - Virus - "ussr-707", "justice", "europe 92" - Installation
Int 21 Fn 4BFF - Virus - "cascade" - Installation Check
Int 21 Fn 4C - Dos 2+ - "exit" - Terminate With Return Code
Int 21 Fn 4C57 - Headroom - ???
Int 21 Fn 4D - Dos 2+ - Get Return Code (errorlevel)
Int 21 Fn 4E - Dos 2+ - "findfirst" - Find First Matching File
Int 21 Fn 4E - Wildunix.com Internal - Installation Check
Int 21 Fn 4F - Dos 2+ - "findnext" - Find Next Matching File
Int 21 Fn 50 - Dos 2+ Internal - Set Current Process Id (set Psp Address)
Int 21 Fn 50FD - Virus - "predator 2" - Installation Check
Int 21 Fn 51 - Dos 2+ Internal - Get Current Process Id (get Psp Address)
Int 21 Fn 52 U - Dos 2+ Internal - "sysvars" - Get List Of Lists
Int 21 Fn 52 U - Dos 2+ Internal - "sysvars" - Get List Of Lists (Cont.)
Int 21 Fn 52 U - Dos 2+ Internal - "sysvars" - Get List Of Lists (Cont.)
4fh word offset In Current Directory Path Of Backslash Corresponding To
4fh word offset In Current Directory Path Of Backslash Corresponding To (Cont.)
4fh word offset In Current Directory Path Of Backslash Corresponding To (Cont.)
Int 21 Fn 5252 - Virus - "516"/"leapfrog" - Installation Check
Int 21 Fn 53 - Dos 2+ Internal - Translate Bios Parameter Block To Drive Pa
Int 21 Fn 54 - Dos 2+ - Get Verify Flag
Int 21 Fn 54 - Virus - "dual_gtm"/"ganeu" - Installation Check
Int 21 Fn 5454 - Virus - "dudley" - Installation Check
Int 21 Fn 55 - Dos 2+ Internal - Create Child Psp
Int 21 Fn 56 - Dos 2+ - "rename" - Rename File
Int 21 Fn 5643 - Virus - "ps-mpc.gold" - Installation Check
Int 21 Fn Sect - Dos 2+ - Get File's Last-written Date And Time
Int 21 Fn 5701 - Dos 2+ - Set File's Last-written Date And Time
Int 21 Fn 5702 - Dos 4.x Only - Get Extended Attributes For File
Int 21 Fn 5702 - Os/2 V1.1+ Family Api - Dosqfileinfo
Int 21 Fn 5702 - Os/2 V1.1+ Compatibility Box Family Api - Dosqpathinfo
Int 21 Fn 5703 - Dos 4.x Only - Get Extended Attribute Properties
Int 21 Fn 5703 - Os/2 V1.1+ Family Api - Dossetfileinfo
Int 21 Fn 5703 - Os/2 V1.1+ Family Api - Dossetpathinfo
Int 21 Fn 5704 - Dos 4.x Only - Set Extended Attributes
Int 21 Fn 5704 - Ms-dos 7/windows95 - Get Last Access Date And Time
Int 21 Fn 5705 - Ms-dos 7/windows95 - Set Last Access Date And Time
Int 21 Fn 5706 - Ms-dos 7/windows95 - Get Creation Date And Time
Int 21 Fn 5707 - Ms-dos 7/windows95 - Set Creation Date And Time
Int 21 Fn 5741 - Virus - "warp" -installation Check
Int 21 Fn 5757 U - Ibm Genie - Resident Manager - Installation Check
Int 21 Fn 5758 U - Headroom - Api
Int 21 Fn 58 - Dos 2.11+ - Get Or Set Memory Allocation Strategy
Int 21 Fn 58 - Dos 5+ - Get Or Set Umb Link State
Int 21 Fn 58CC - Virus - "1067"/"headcrash" - Installation Check
Int 21 Fn 58DD - Virus - "1067"/"headcrash" - Get Original Int 21h Vector
Int 21 Fn 59 - Dos 3.0+ - Get Extended Error Information
Int 21 Fn 59 - European Ms-dos 4.0 - Get Hard Error Information
Int 21 Fn 5A - Dos 3.0+ - Create Temporary File
Int 21 Fn 5B - Dos 3.0+ - Create New File
Int 21 Fn 5C - Dos 3.0+ - "flock" - Record Locking
Int 21 Fn 5D00 U - Dos 3.1+ Internal - Server Function Call
Int 21 Fn 5D01 U - Dos 3.1+ Internal - Commit All Files For Specified Compu
Int 21 Fn 5D02 U - Dos 3.1+ Internal - Share.exe - Close File By Name
Int 21 Fn 5D03 U - Dos 3.1+ Internal - Share.exe - Close All Files For Give
Int 21 Fn 5D04 U - Dos 3.1+ Internal - Share.exe - Close All Files For Give
Int 21 Fn 5D05 U - Dos 3.1+ Internal - Share.exe - Get Open File List Entry
Int 21 Fn 5D06 U - Dos 3.0+ Internal - Get Address Of Dos Swappable Data Ar
Int 21 Fn 5D07 U - Dos 3.1+ Network - Get Redirected Printer Mode
Int 21 Fn 5D08 U - Dos 3.1+ Network - Set Redirected Printer Mode
Int 21 Fn 5D09 U - Dos 3.1+ Network - Flush Redirected Printer Output
Int 21 Fn 5D0A - Dos 3.1+ - Set Extended Error Information
Int 21 Fn 5D0B OU - Dos 4.x Only Internal - Get Dos Swappable Data Areas
Int 21 Fn 5E00 - Dos 3.1+ Network - Get Machine Name
Int 21 Fn 5E00 - 10net V5.0 - Get Machine Name
Int 21 Fn 5E01 - Dos 3.1+ Network - Set Machine Name
Int 21 Fn 5E01 - 10net V5.0 - Get Local 10net Configuration Table
Int 21 Fn 5E02 - Dos 3.1+ Network - Set Network Printer Setup String
Int 21 Fn 5E03 - Dos 3.1+ Network - Get Network Printer Setup String
Int 21 Fn 5E04 - Dos 3.1+ Network - Set Printer Mode
Int 21 Fn 5E04 - 10net V5.0 - Initiate Print Job
Int 21 Fn 5E05 - Dos 3.1+ Network - Get Printer Mode
Int 21 Fn 5E05 - 10net V5.0 - Terminate Print Job
Int 21 Fn 5E06 - 10net V5.0 - Get/set 10net Workstation Printer Setup Struc
Int 21 Fn 5F00 - Dos 3.1+ Network - Get Redirection Mode
Int 21 Fn 5F01 - Dos 3.1+ Network - Set Redirection Mode
Int 21 Fn 5F02 - Dos 3.1+ Network - Get Redirection List Entry
Int 21 Fn 5F03 - Dos 3.1+ Network - Redirect Device
Int 21 Fn 5F04 - Dos 3.1+ Network - Cancel Redirection
Int 21 Fn 5F05 - Dos 4.0+ Network - Get Extended Redirection List Entry
Int 21 Fn 5F05 - Starlite Architecture - Map Local Drive Letter To Remote F
Int 21 Fn 5F06 U - Network - Get Full Redirection List
Int 21 Fn 5F06 - Starlite Architecture - Unmap Drive Letter
Int 21 Fn 5F07 - Dos 5+ - Enable Drive
Int 21 Fn 5F07 - Starlite Architecture - Make Named Object Available On Net
Int 21 Fn 5F08 - Dos 5+ - Disable Drive
Int 21 Fn 5F08 - Starlite Architecture - Remove Global Network Name Of Obje
Int 21 Fn 5F09 - Starlite Architecture - Bind To Network Device
Int 21 Fn 5F0A - Starlite Architecture - Detach From Network Device
Int 21 Fn 5F30 U - Lan Manager Enhanced Dos - Get Redirector Version
Int 21 Fn 5F32 u - Named Pipes - Local Dosqnmpipeinfo
Int 21 Fn 5F33 u - Named Pipes - Local Dosqnmphandstate
Int 21 Fn 5F34 u - Named Pipes - Local Dossetnmphandstate
Int 21 Fn 5F35 u - Named Pipes - Local Dospeeknmpipe
Int 21 Fn 5F36 u - Named Pipes - Local Dostransactnmpipe
Int 21 Fn 5F37 u - Named Pipes - Doscallnmpipe
Int 21 Fn 5F38 u - Named Pipes - Local Doswaitnmpipe - Await Avail. Of Pipe
Int 21 Fn 5F39 U - Named Pipes - Local Dosrawreadnmpipe
Int 21 Fn 5F3A U - Named Pipes - Local Dosrawwritenmpipe
Int 21 Fn 5F3B u - Lan Manager Enhanced Dos - Nethandlesetinfo
Int 21 Fn 5F3C u - Lan Manager Enhanced Dos - Nethandlegetinfo
Int 21 Fn 5F3D U - Lan Manager Enhanced Dos - Write Mailslot???
Int 21 Fn 5F3E u - Lan Manager Enhanced Dos - Local Netspecialsmb
Int 21 Fn 5F3F U - Lan Manager Enhanced Dos - Remote Api Call
Int 21 Fn 5F40 u - Lan Manager Enhanced Dos - Local Netmessagebuffersend
Int 21 Fn 5F41 u - Lan Manager Enhanced Dos - Local Netserviceenum
Int 21 Fn 5F42 u - Lan Manager Enhanced Dos - Local Netservicecontrol
Int 21 Fn 5F43 u - Lan Manager Enhanced Dos - Local Dosprintjobgetid
Int 21 Fn 5F44 - Lan Manager Enhanced Dos - Local Netwkstagetinfo
Int 21 Fn 5F45 u - Lan Manager Enhanced Dos - Local Netwkstasetinfo
Int 21 Fn 5F46 u - Lan Manager Enhanced Dos - Local Netuseenum
Int 21 Fn 5F47 u - Lan Manager Enhanced Dos - Local Netuseadd
Int 21 Fn 5F48 u - Lan Manager Enhanced Dos - Local Netusedel
Int 21 Fn 5F49 u - Lan Manager Enhanced Dos - Netusegetinfo
Int 21 Fn 5F4A u - Lan Manager Enhanced Dos - Local Netremotecopy
Int 21 Fn 5F4B u - Lan Manager Enhanced Dos - Local Netremotemove
Int 21 Fn 5F4C u - Lan Manager Enhanced Dos - Local Netserverenum
Int 21 Fn 5F4D u - Lan Manager Enhanced Dos - Dosmakemailslot
Int 21 Fn 5F4E u - Lan Manager Enhanced Dos - Dosdeletemailslot
Int 21 Fn 5F4F u - Lan Manager Enhanced Dos - Dosmailslotinfo
Int 21 Fn 5F50 u - Lan Manager Enhanced Dos - Dosreadmailslot
Int 21 Fn 5F51 u - Lan Manager Enhanced Dos - Dospeekmailslot
Int 21 Fn 5F52 u - Lan Manager Enhanced Dos - Doswritemailslot
Int 21 Fn 5F53 u - Lan Manager Enhanced Dos - Netserverenum2
Int 21 Fn 5F55 U - Lan Manager Enhanced Dos - Kill All Connections???
Int 21 Fn 5F80 - Lantastic - Get Login Entry
Int 21 Fn 5F81 - Lantastic - Login To Server
Int 21 Fn 5F82 - Lantastic - Logout From Server
Int 21 Fn 5F83 - Lantastic - Get Username Entry
Int 21 Fn 5F84 - Lantastic - Get Inactive Server Entry
Int 21 Fn 5F85 - Lantastic - Change Password
Int 21 Fn 5F86 - Lantastic - Disable Account
Int 21 Fn 5F87 - Lantastic V3+ - Get Account
Int 21 Fn 5F88 - Lantastic V4.0+ - Logout From All Servers
Int 21 Fn 5F97 - Lantastic - Copy File
Int 21 Fn 5F98 - Lantastic - Send Unsolicited Message
Int 21 Fn 5F99 - Lantastic - Get Last Received Unsolicited Message
Int 21 Fn 5F9A - Lantastic - Get Message Processing Flags
Int 21 Fn 5F9B - Lantastic - Set Message Processing Flags
Int 21 Fn 5F9C - Lantastic V3+ - Pop Up Last Received Message
Int 21 Fn 5F9D - Lantastic V4.1+ - Get Redirector Control Bits
Int 21 Fn 5F9E - Lantastic V4.1+ - Set Redirector Control Bits
Int 21 Fn 5FA0 - Lantastic - Get Queue Entry
Int 21 Fn 5FA1 - Lantastic - Set Queue Entry
Int 21 Fn 5FA2 - Lantastic - Control Queue
Int 21 Fn 5FA3 - Lantastic V3+ - Get Printer Status
Int 21 Fn 5FA4 - Lantastic V3+ - Get Stream Info
Int 21 Fn 5FA5 - Lantastic V3+ - Set Stream Info
Int 21 Fn 5FA7 - Lantastic - Create User Audit Entry
Int 21 Fn 5FA9 - Lantastic V4.1+ - Set Extended Queue Entry
Int 21 Fn 5FB0 - Lantastic - Get Active User Information
Int 21 Fn 5FB1 - Lantastic - Get Shared Directory Information
Int 21 Fn 5FB2 - Lantastic V3+ - Get Username From Account File
Int 21 Fn 5FB3 - Lantastic V3+ - Translate Path
Int 21 Fn 5FB4 - Lantastic V3+ - Create Indirect File
Int 21 Fn 5FB5 - Lantastic V3+ - Get Indirect File Contents
Int 21 Fn 5FB6 - Lantastic V4.1+ - Set Auto-login Defaults
Int 21 Fn 5FB7 - Lantastic V4.1+ - Get Auto-login Defaults
Int 21 Fn 5FC0 - Lantastic - Get Time From Server
Int 21 Fn 5FC8 - Lantastic V4.0+ - Schedule Server Shutdown
Int 21 Fn 5FC9 - Lantastic V4.0+ - Cancel Server Shutdown
Int 21 Fn 5FCA - Lantastic V4.0+ - Stuff Server Keyboard Buffer
Int 21 Fn 5FCB - Lantastic V4.1+ - Terminate User
Int 21 Fn 5FCC - Lantastic V4.1+ - Get/set Server Control Bits
Int 21 Fn 5FCD - Lantastic V4.1+ - Flush Server Caches
Int 21 Fn 5FD0 - Lantastic - Get Redirected Printer Timeout
Int 21 Fn 5FD1 - Lantastic - Set Redirected Printer Timeout
Int 21 Fn 5FE0 C - Lantastic - Get Dos Service Vector
Int 21 Fn 5FE1 - Lantastic - Set Dos Service Vector
Int 21 Fn 5FE2 - Lantastic - Get Message Service Vector
Int 21 Fn 5FE3 - Lantastic - Set Message Service Vector
Int 21 Fn 60 - Dos 3.0+ - "truename" - Canonicalize Filename Or Path
Int 21 Fn 61 - Dos 3.0+ - Unused (reserved For Network Use)
Int 21 Fn 61 U - Os/2 V1.x Fapi - Os/2 File System Join/subst
Int 21 Fn 62 - Dos 3.0+ - Get Current Psp Address
Int 21 Fn 6262 - Envlock - Installation Check
Int 21 Fn 6300 - Dos 2.25 Only - Get Lead Byte Table Address
Int 21 Fn 6300 - Dos 3.2+ - Get Double Byte Character Set Lead-byte Table
Int 21 Fn 6301 - Dos 2.25, Dos 3.2+ - Set Korean (hangeul) Input Mode
Int 21 Fn 6302 - Dos 2.25, Dos 3.2+ - Get Korean (hangeul) Input Mode
Int 21 Fn 6303 - Virus - "dos Idle" - Installation Check
Int 21 Fn 6304 - Virus - "replicator" - Installation Check
Int 21 Fn 64 - Dos 3.2+ Internal - Set Device Driver Lookahead Flag
Int 21 Fn 64 U - Os/2 V2.0+ Virtual Dos Machine - Enable Automatic Title Sw
Int 21 Fn 64 U - Os/2 V2.0+ Virtual Dos Machine - Set Session Title
Int 21 Fn 64 U - Os/2 V2.0+ Virtual Dos Machine - Get Session Title
Int 21 Fn 64 U - Os/2 V2.1 Virtual Dos Machine - Get Lastdrive
Int 21 Fn 64 U - Os/2 V2.1+ Virtual Dos Machine - Get Size Of Ptda Jft