Technical Data
DOS-C Systems Calls
The following table represents the industry standard kernel DOS calls
currently supported by DOS-C. This list is for Release 0.90 as issued on
April 5, 1995.
int 20: Terminated Current Process
Supported
int 21: DOS System Call
Supported. See table below.
int 21 Description State Ver Status
---------------------------------------------------------------------------
00h Terminate Program superseded 1.00 supported
01h Read Keyboard with Echo superseded 1.00 supported
02h Display Character superseded 1.00 supported
03h Auxilliary Input superseded 1.00 Note 1
04h Auxilliary Output superseded 1.00 Note 1
05h Print Character superseded 1.00 Note 1
06h Direct Console I/O active 1.00 supported
07h Direct Console Input active 1.00 supported
08h Read Keyboard Without Echo active 1.00 supported
09h Display String superseded 1.00 supported
0ah Buffered Keyboard Input superseded 1.00 supported
0bh Check Keyboard Status active 1.00 supported
0ch Flush Buffer, Read Keyboard active 1.00 supported
0dh Reset Drive active 1.00 supported
0eh Set Default Drive active 1.00 supported
0fh Open File with FCB superseded 1.00 supported
10h Close File with FCB superseded 1.00 supported
11h Find First File with FCB superseded 1.00 supported
12h Find Next File with FCB superseded 1.00 supported
13h Delete File with FCB superseded 1.00 supported
14h Sequential Read superseded 1.00 supported
15h Sequential Write superseded 1.00 supported
16h Create File with FCB superseded 1.00 supported
17h Rename File with FCB superseded 1.00 supported
18h CP/M compatibility obsolete 1.00 supported
19h Get Default Drive active 1.00 supported
1ah Set Disk Transfer Address active 1.00 supported
1bh Get Default Drive Data superseded 2.00 supported
1ch Get Drive Data superseded 2.00 supported
1dh CP/M compatibility obsolete 1.00 supported
1eh CP/M compatibility obsolete 1.00 supported
1fh Get Default DPB active 5.00 Note 2
20h CP/M compatibility obsolete 1.00 supported
21h Random Read superseded 1.00 supported
22h Random Write superseded 1.00 supported
23h Get File Size superseded 1.00 supported
24h Set Random Record Number superseded 1.00 supported
25h Set Interrupt Vector active 1.00 supported
26h Create New PSP superseded 1.00 supported
27h Random Block Read superseded 1.00 supported
28h Random Block Write superseded 1.00 supported
29h Parse Filename active 1.00 supported
2ah Get Date active 1.00 supported
2bh Set Date active 1.00 supported
2ch Get Time active 1.00 supported
2dh Set Time active 1.00 supported
2eh Set/Reset Verify Flag active 1.00 supported
2fh Get DTA active 2.00 supported
30h Get Version Number active 2.00 supported
31h Keep Program active 2.00 supported
32h Get DPB active 5.00 Note 2
3300h Get CTRL+C Check Flag active 2.00 supported
3301h Set CTRL+C Check Flag active 2.00 supported
3305h Get Startup Drive active 2.00 supported
3306h Get MS-DOS Version active 5.00 supported
33ffh Get DOS-C Release superset supported
34h Get InDOS Flag Address active 2.00 supported
35h Get Interrupt Vector active 2.00 supported
36h Get Disk Free Space active 2.00 supported
37h Get/Set Switchar undocumented 2.00 supported
38h Get/Set Country Information active 2.00 open
39h Create Directory active 2.00 supported
3ah Remove Directory active 2.00 supported
3bh Change Current Directory active 2.00 supported
3ch Create File with Handle active 2.00 supported
3dh Open File with Handle active 2.00 supported
3eh Close File with Handle active 2.00 supported
3fh Read File or Device active 2.00 supported
40h Write File or Device active 2.00 supported
41h Delete File active 2.00 supported
42h Move File Pointer active 2.00 supported
4300h Get File Attributes active 2.00 supported
4301h Set File Attributes active 2.00 supported
44h Ioctl entry active 2.00 Note 3
45h Duplicate File Handle active 2.00 supported
46h Force Duplicate File Handle active 2.00 supported
47h Get Current Directory active 2.00 supported
48h Allocate Memory active 2.00 supported
49h Free Allocated Memory active 2.00 supported
4ah Set Memory Block Size active 2.00 supported
4b00h Load and Execute Program active 2.00 supported
4b01h Load Program active 2.00 supported
4b03h Load Overlay active 2.00 supported
4b05h Set Execution State active 5.00 open
4ch End Program active 2.00 supported
4dh Get Child-Program Return Value active 2.00 supported
4eh Find First File active 2.00 supported
4fh Find Next File active 2.00 supported
50h Set PSP Address active 2.00 supported
51h Get PSP Address active 2.00 supported
52h Get List of Lists undocumented 2.00 supported
53h undocumented
54h Get Verify State active 2.00 supported
55h Create New Psp undocumented 2.00 supported
56h Rename File active 2.00 supported
5700h Get File Date and Time active 2.00 supported
5701h Set File Date and Time active 2.00 supported
5800h Get Allocation Strategy active 3.00 supported
5801h Set Allocation Strategy active 3.00 supported
5802h Get Upper-Memory Link active 5.00 open
5803h Set Upper-Memory Link active 5.00 open
59h Get Extended Error active 3.00 open
5ah Create Temporary File active 3.00 open
5bh Create New File active 3.00 open
5ch Lock/Unlock File active 3.10 open
5d00h Server Function Call active 3.10 open
5d01h Commit All Files active 3.10 open
5d02h Close File by Name active 3.10 open
5d03h Close All Files for Computer active 3.10 open
5d04h Close All Files for Process active 3.10 open
5d05h Get Open File List active 3.10 open
5d06h Get SDA superseded 3.00 open
5d07h Get Redirected Printer Mode active 3.10 open
5d08h Set Redirected Printer Mode active 4.00 open
5d09h Flush Redirected Printer Output active 4.00 open
5d0ah Set Extended Error active 4.00 open
5d06h Get Multiple SDA active 4.00 open
5eh Generic Network Functions #1 active 3.10 open
5fh Generic Network Functions #2 active 3.10 open
60h undocumented
61h obsolete
62h Get current PSP undocumented 3.00 supported
63h Multibyte char ops undocumented 3.20 Note 4
64h undocumented
65h NLS Functions active 3.30 open
66h Code Page Functions active 3.30 open
67h Set Maximum Handle Count active 3.30 open
68h Commit File active 3.30 open
69h undocumented
6ah undocumented
6bh undocumented
6ch Extended Open/Create active 4.00 open
int 22: Program Termination Address.
Supported.
int 23: Ctrl-C/Ctrl_Break Handler.
Supported.
int 24: Critical Error Handler
Note 5.
int 25: Critical Error Handler
Note 5.
int 26: Critical Error Handler
Note 5.
int 27: TSR
Supported.
int 28: DOS Idle.
Note 5.
int 29: Fast Console Output.
Supported.
int 2F: DOS Multiplex.
Note 5.
Notes:
Note 1 - Although this system call is supported, there are no device drivers
to support these devices in this release.
Note 2 - Returns error code because internal data structures differ.
Note 3 - Only sub-functions 0 and 1 are currently supported.
Note 4 - Returns error code.
Note 5 - Vector supported but performs no action.
Copyright
---------
(c) Copyright 1995 by Pasquale J. Villani
All Rights Reserved.
License
-------
See COPYING in DOS-C root directory for license.
$Header: C:/dos-c/doc/intfns.txv 1.1 01 Sep 1995 17:30:42 patv $
$Log: C:/dos-c/doc/intfns.txv $
Rev 1.1 01 Sep 1995 17:30:42 patv
First GPL release
Rev 1.0 05 Jul 1995 18:50:22 patv
Initial revision.
