source: xtideuniversalbios/trunk/Assembly_Library/Inc/DosFunctions.inc@ 446

Last change on this file since 446 was 446, checked in by aitotat@…, 12 years ago

Changes to Assembly Library:

  • File Library can now create files.
File size: 2.0 KB
Line 
1; Project name : AssemblyLibrary
2; Description : Defines for MS-DOS functions.
3%ifndef DOS_FUNCTIONS_INC
4%define DOS_FUNCTIONS_INC
5
6; DOS interrupts
7DOS_INTERRUPT_21h EQU 21h
8DOS_CRITICAL_ERROR_HANDLER_24h EQU 24h
9DOS_TSR_MULTIPLEX_INTERRUPT_2Fh EQU 2Fh
10
11; DOS drive and file functions
12SELECT_DEFAULT_DRIVE EQU 0Eh
13GET_CURRENT_DEFAULT_DRIVE EQU 19h
14GET_DISK_TRANSFER_AREA_ADDRESS EQU 2Fh
15GET_DOS_DRIVE_PARAMETER_BLOCK_FOR_SPECIFIC_DRIVE EQU 32h
16SET_CURRENT_DIRECTORY EQU 3Bh
17CREATE_OR_TRUNCATE_FILE EQU 3Ch
18OPEN_EXISTING_FILE EQU 3Dh
19CLOSE_FILE EQU 3Eh
20READ_FROM_FILE_OR_DEVICE EQU 3Fh
21WRITE_TO_FILE_OR_DEVICE EQU 40h
22SET_CURRENT_FILE_POSITION EQU 42h
23GET_CURRENT_DIRECTORY EQU 47h
24FIND_FIRST_MATCHING_FILE EQU 4Eh
25FIND_NEXT_MATCHING_FILE EQU 4Fh
26
27; DOS functions for TSRs
28SET_INTERRUPT_VECTOR EQU 25h
29GET_INTERRUPT_VECTOR EQU 35h
30
31; DOS errors
32ERR_DOS_DRIVE_NOT_READY EQU 15h
33
34
35
36; DOS Program Segment Prefix (PSP, first 256 (100h) bytes on top of program)
37struc PSP
38 .int20hInstruction resb 2
39 .wSizeOfMemoryInParagraphs resb 2
40 .reservedAt4h resb 1
41 .callToDosFunctionDispatcher resb 5
42 .fpInt22hTerminate resb 4
43 .fpInt23hCtrlC resb 4
44 .fpInt24hCriticalError resb 4
45 .reservedAt16h resb 22
46 .wEnvironmentSegment resb 2
47 .reservedAt2Eh resb 34
48 .int21hAndRetfInstructions resb 3
49 .reservedAt53h resb 9
50 .FCB1 resb 16
51 .FCB2 resb 20
52 .DiskTransferArea:
53 .bCommandLineLength resb 1
54 .szCommandLine resb 127
55endstruc
56
57
58; DOS DTA (Disk Transfer Area)
59struc DTA
60 ; Undocumented fields
61 .reservedAt0h resb 21
62 ; Documented fields
63 .bFileAttributes resb 1 ; 15h, Attribute of matching file
64 .wFileTime resb 2 ; 16h, File time
65 .wFileDate resb 2 ; 18h, File date
66 .dwFileSize resb 4 ; 1Ah, File size in bytes
67 .szFile resb 13 ; 1Eh, ASCIZ filename + extension
68endstruc
69
70
71%endif ; DOS_FUNCTIONS_INC
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