RBIL61 - DOS 4.0

INT 21 - DOS 2+ internal - "SYSVARS" - GET LIST OF LISTS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx51174}{#idx51231}{#idx51241}{#idx51305}{#idx51344}{#idx51386}{#idx51395}{#idx51549}{#idx51623}{#idx51732}{#idx51737}{#idx51771}{#idx51777}{#idx51800}{#idx51804}{#idx51814}{#idx51829}{#idx52006}

INT 21 - DOS 2+ internal - TRANSLATE BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. PARAMETER BLOCK TO DRIVE PARAM BLOCK {#idx52042}{#idx52055}{#idx52065}

INT 21 - DOS 2.25 only - GET LEAD BYTE TABLE ADDRESS {#idx55260}

INT 21 - DOS 3.0+ internal - GET ADDRESS OF DOS SWAPPABLE DATA AREA {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx53070}{#idx53074}

INT 21 - DOS 3.2+ - IOCTL - GENERIC BLOCK DEVICE REQUEST {#idx48931}{#idx48956}{#idx48958}{#idx49004}{#idx49007}

INT 21 - DOS 3.2+ - IOCTL - GENERIC CHARACTER DEVICE REQUEST {#idx48784}{#idx48788}{#idx48794}{#idx48797}{#idx48817}{#idx48834}{#idx48838}{#idx48841}{#idx48880}{#idx48881}

INT 21 - DOS 3.3+ - GET EXTENDED COUNTRY INFORMATION {#idx55450}{#idx55471}{#idx55489}{#idx55511}{#idx55518}

INT 21 - DOS 3.3+ - SET GLOBAL CODE PAGE TABLE {#idx55620}

INT 21 - DOS 3.4/4.0 - GET CURRENT CPSW STATE {#idx44428}{#idx44430}

INT 21 - DOS 3.4/4.0 - SET CPSW STATE {#idx44447}{#idx44449}

INT 21 - DOS 4.0 internal - IFSsee Installable File System IOCTL {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx55813}

INT 21 - DOS 4.0+ - COMMIT FILE {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx55802}

INT 21 - DOS 4.0+ - DETERMINE IF CHARACTER REPRESENTS YES/NO RESPONSE {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx55500}

INT 21 - DOS 4.0+ - EXTENDED OPEN/CREATE {#idx55841}

INT 21 - DOS 4.0+ - GET BOOT DRIVE {#idx44461}

INT 21 - DOS 4.0+ internal - GET/SET DISK SERIAL NUMBER {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx55706}{#idx55745}

INT 21 - DOS 4.0+ network - GET EXTENDED REDIRECTION LIST ENTRY {#idx53895}

INT 21 - DOS 4.x only - GET EXTENDED ATTRIBUTE PROPERTIES {#idx52273}

INT 21 - DOS 4.x only - internal - GET DOS SWAPPABLE DATA AREAS {obsolete, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx53305}{#idx53322}{#idx53469}

INT 21 - European MS-DOS 4.0 - "AEXEC" - EXECUTE PROGRAM IN BACKGROUND {#idx56725}{#idx56740}{#idx56764}

INT 21 - European MS-DOS 4.0 - "CREATMEM" - CREATE A SHARED MEMORY AREA {#idx56834}

INT 21 - European MS-DOS 4.0 - "CWAIT" - WAIT FOR CHILD TO TERMINATE {#idx56988}

INT 21 - European MS-DOS 4.0 - "FREEZE" - STOP A PROCESS {#idx56775}

INT 21 - European MS-DOS 4.0 - "GETMEM" - OBTAIN ACCESS TO SHARED MEMORY AREA {#idx56858}{#idx56866}

INT 21 - European MS-DOS 4.0 - "GETPID" - GET PROCESS IDENTIFIER {#idx56926}{#idx56934}{#idx56942}{#idx56947}

INT 21 - European MS-DOS 4.0 - "PARTITION" - GET/SET FOREGROUND PARTITION SIZE {#idx56801}

INT 21 - European MS-DOS 4.0 - "PBLOCK" - BLOCK A PROCESS {partially documented} {#idx57245}

INT 21 - European MS-DOS 4.0 - "PIPE" - CREATE A NEW PIPE {#idx57190}

INT 21 - European MS-DOS 4.0 - "PRUN" - UNBLOCK A PROCESS {partially documented} {#idx57257}{#idx57263}

INT 21 - European MS-DOS 4.0 - "RELEASEMEM" - FREE SHARED MEMORY AREA {#idx56881}

INT 21 - European MS-DOS 4.0 - "RESUME" - RESTART A PROCESS {#idx56788}

INT 21 - European MS-DOS 4.0 - "SETFILETABLE" - INSTALL NEW FILE HANDLE TABLE {#idx56905}

INT 21 - European MS-DOS 4.0 - "SETPRI" - GET/SET PROCESS PRIORITY {#idx57062}

INT 21 - European MS-DOS 4.0 - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx56900}{#idx56952}{#idx57010}{#idx57075}{#idx57080}{#idx57130}{#idx57166}{#idx57204}{#idx57221}{#idx57226}{#idx57240}

INT 21 - European MS-DOS 4.0 - GET HARD ERROR INFORMATION {#idx52812}{#idx52820}

INT 21 - European MS-DOS 4.0 - HARD ERROR PROCESSING {#idx57209}

INT 21 - European MS-DOS 4.0 - SEND SIGNAL {#idx57050}

INT 21 - European MS-DOS 4.0 - SET SIGNAL HANDLER {#idx57015}{#idx57031}

INT 21 - European MS-DOS 4.0 - SLEEP {#idx56957}

INT 24 - DOS 1+ - CRITICAL ERROR HANDLER {callout or callback} {#idx72165}{#idx72166}{#idx72167}{#idx72170}

INT 2A - NETWORK - BEGIN DOS CRITICAL SECTION {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx72836}

INT 2F - APPEND - GET VERSION {#idx90305}

INT 2F - CD-ROM - INSTALLATION CHECK {#idx78924}

INT 2F - DOS 3.0+ CRITICAL ERROR HANDLER - EXPAND ERROR INTO STRING {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx75327}

INT 2F - DOS 3.0+ internal - CHECK IF CHARACTER DEVICE {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77784}

INT 2F - DOS 3.3+ internal - SET FASTOPEN ENTRY POINT {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77889}{#idx77891}{#idx77901}

INT 2F - DOS 4.0+ - ??? {#idx89670}{#idx89672}

INT 2F - DOS 4.0+ ANSI.SYS - INSTALLATION CHECK {#idx81977}

INT 2F - DOS 4.0+ ANSI.SYS internal - GET/SET DISPLAY INFORMATION {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx82021}

INT 2F - DOS 4.0+ ANSI.SYS internal - MISCELLANEOUS REQUESTS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx82033}

INT 2F - DOS 4.0+ APPEND - GET APPEND FUNCTION STATE {#idx90332}

INT 2F - DOS 4.0+ APPEND - SET APPEND FUNCTION STATE {#idx90345}

INT 2F - DOS 4.0+ APPEND - SET RETURN FOUND NAME STATE {#idx90361}{#idx90371}

INT 2F - DOS 4.0+ DRIVER.SYS support - GET DRIVE DATA TABLE LIST {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx75810}{#idx75891}

INT 2F - DOS 4.0+ internal - GET OR SET ERROR TABLE ADDRESSES {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77944}

INT 2F - DOS 4.0+ SELECT - DISPLAY FORMAT DISK PROMPT {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx89964}{#idx89967}

INT 2F - DOS 4.00 GRAPHICS.COM - INSTALLATION CHECK {#idx78901}

INT 2F - DOS 4.01+ GRAPHICS.COM - INSTALLATION CHECK {#idx89391}{#idx89397}

INT 2F - DOS 4.x DISPLAY.SYS internal - INSTALLATION CHECK??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx89661}

INT 2F - DOS 5+ - COMMAND.COM INTERFACE {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx85879}

INT 2F - DRIVER.SYS support - EXECUTE DEVICE DRIVER REQUEST {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx75418}{#idx75454}{#idx75458}{#idx75465}{#idx75468}{#idx75473}{#idx75509}{#idx75528}{#idx75540}{#idx75552}{#idx75594}{#idx75653}{#idx75672}{#idx75677}{#idx75730}{#idx75806}

INT 2F - European MS-DOS 4.0 POPUP - "CheckPu" - INSTALLATION CHECK {#idx78682}

INT 2F - European MS-DOS 4.0 POPUP - "PostPu" - OPEN/CLOSE POPUP SCREEN {#idx78769}

INT 2F - European MS-DOS 4.0 POPUP - "RestorePu" - RESTORE SCREEN {#idx78825}

INT 2F - European MS-DOS 4.0 POPUP - "SavePu" - SAVE POPUP SCREEN {#idx78801}

INT 2F - IFSFUNC.EXE (DOS 4.x only) - EXTENDED ATTRIBUTES {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77238}{#idx77239}

INT 2F - IFSFUNC.EXE (DOS 4.x only) - FIND NEXT FILE WITHOUT CDSsee Current Directory Structure {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx76895}

INT 2F - IFSFUNC.EXE (DOS 4.x only) - GENERIC IOCTL {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77211}

INT 2F - IFSFUNC.EXE (DOS 4.x only) - IFSsee Installable File System IOCTL {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77289}

INT 2F - MS-DOS 3.3+ KEYB.COM internal - INSTALLATION CHECK {partially documented} {#idx89724}{#idx89746}

INT 2F - NETWORK REDIRECTOR (DOS 3.x only) - LOCK REGION OF FILE {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx76646}{#idx76651}{#idx76656}

INT 2F - NETWORK REDIRECTOR (DOS 3.x only) - UNLOCK REGION OF FILE {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx76678}

INT 2F - NETWORK REDIRECTOR (DOS 4.0+) - "UPDATE_CB" - ??? {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77218}

INT 2F - NETWORK REDIRECTOR (DOS 4.0+) - EXTENDED OPEN/CREATE FILE {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx77251}{#idx77269}

INT 2F - Quarterdeck RPCI - GET QD HIMEM PRESENCE {#idx93541}

INT 2F - SHARE - INSTALLATION CHECK {#idx75954}{#idx75975}

PORTIBM PC Portable (uses same BIOS as XT) 13C6 - Compaq - VIDEO STATUS??? {#idx154160}