DOS Function Index - by DOS Version
This index lists INT 21H functions, organized by the DOS versions in which
they first appeared. Fns that have been supported since DOS 1.x and 2.x
are not listed, except for a few which were first documented with DOS 5.0.
See DOS Function Index - by Number for a complete list.
Versions DOS Function
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³?.? ³ 52H Get DOS Variables
³?.? ³ 53H Convert BPB to DPB
³?.? ³ 60H Query TrueName
³ ³
³2.0+³ 1fH Get Drive Parameter Block (current disk)
³2.0+³ 32H Get DPB (Drive Parameter Block)
³2.0+³ 3305H Get Boot Drive
³2.0+³ 34H Get InDOS Address (DOS Reentrancy Status)
³2.0+³ 4b01H Load Program
³2.0+³ 50H Set PSP
³2.0+³ 51H Query Current PSP
³2.0+³ 62H Query Current PSP
³ ³
³3.0+³ 4408H IOCTL Does Drive Use Removable Media
³3.0+³ 5800H Query Memory Allocation Strategy
³3.0+³ 5801H Set Memory Allocation Strategy
³3.0+³ 59H Get Extended Error Info
³3.0+³ 5aH Create Unique Temporary File
³3.0+³ 5bH Create New File
³ ³
³3.1+³ 4409H IOCTL Is Drive Remote
³3.1+³ 440aH IOCTL Is File/Device Remote
³3.1+³ 440bH IOCTL Set Sharing Retry Count
³3.1+³ 5c00H Lock File Access
³3.1+³ 5c01H Unlock File Access
³3.1+³ 5e00H Query Network Node Name
³3.1+³ 5e02H Set Network Printer Setup
³3.1+³ 5e03H Query Network Printer Setup
³3.1+³ 5f02H Network Query Assign-List Entry
³3.1+³ 5f03H Make Network Connection
³3.1+³ 5f04H Delete Network Connection
³ ³
³3.2+³ 440dH 40H IOCTL Set Device Parameters
³3.2+³ 440dH 41H IOCTL Write Track on Logical Drive
³3.2+³ 440dH 42H IOCTL Format Track on Logical Drive
³3.2+³ 440dH 47H IOCTL Set Access Flag
³3.2+³ 440dH 60H IOCTL Query Device Parameters
³3.2+³ 440dH 61H IOCTL Read Track on Logical Drive
³3.2+³ 440dH 62H IOCTL Verify Track on Logical Drive
³3.2+³ 440dH 68H IOCTL Sense Media Type
³3.2+³ 440eH IOCTL Query Logical Drive Map
³3.2+³ 440fH IOCTL Set Logical Drive Map
³ ³
³3.3+³ 440cH 45H IOCTL Set Retry Iteration Count
³3.3+³ 440cH 4AH IOCTL Select Code Page
³3.3+³ 440cH 4CH IOCTL Start Code Page Prepare
³3.3+³ 440cH 4DH IOCTL End Code Page Prepare
³3.3+³ 440cH 65H IOCTL Query Retry Iteration Count
³3.3+³ 440cH 6AH IOCTL Query Current Code Page
³3.3+³ 440cH 6BH IOCTL Query Code Page List
³3.3+³ 6501H Get Extended Country Information
³3.3+³ 6504H Get Uppercase Table
³3.3+³ 6505H Get Filename Character Table
³3.3+³ 6506H Get Collating Sequence Table
³3.3+³ 6507H Get Double-Byte Character Set
³3.3+³ 6520H Upshift Character
³3.3+³ 6521H Upshift String
³3.3+³ 6522H Upshift ASCIIZ String
³3.3+³ 6601H Query Active Code Page
³3.3+³ 6602H Activate Code Page
³3.3+³ 67H Set File Handle Count
³3.3+³ 68H Commit File
³ ³
³4.0 ³ 440dH 67H IOCTL Query Access Flag
³4.0+³ 440cH 5Fh IOCTL Set Display Mode
³4.0+³ 440cH 7Fh IOCTL Query Display Mode
³4.0+³ 440dH 46H IOCTL Set Media ID
³4.0+³ 5d0aH Set Extended Error
³4.0+³ 6cH Extended Open/Create
³ ³
³5.0+³ 3306H Get DOS Version Info
³5.0+³ 440dH 66H IOCTL Query Media ID
³5.0+³ 4410H IOCTL Query IOCTL Support for Handle
³5.0+³ 4411H IOCTL Query IOCTL Support for Device
³5.0+³ 4b05H Set Execution State
³5.0+³ 5802H Query Upper-Memory Link State
³5.0+³ 5803H Set Upper-Memory Link State
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See Also: DOS Function Index - by Number
Superseded DOS Functions
Obsolete DOS Functions
DOS Versions (summary of differences from version to version)
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