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DOS CALL MANUAL

DOS Call List

Caution: Calls to $FF00~$FF7F in Human68k Version 2 have been moved to $FF80~$FFAF in Version 3 and later

Processing address calls at $FFF5~$FFF7 and $FFFA~$FFFE can not be changed(ignored) $FFF8,$FFFF is executed after the original processing is normally completed. $FFF8 is called every time a thread is deleted.

Code	Name	Description
$FF00	_EXIT	Program end
$FF01	_GETCHAR	Get keyboard input (with echo)
$FF02	_PUTCHAR	Put character
$FF03	_COMINP	RS-232C 1 byte input
$FF04	_COMOUT	RS-232C 1 byte output
$FF05	_PRNOUT	Printer 1 character output
$FF06	_INPOUT	Character I/O
$FF07	_INKEY	Get one character from the keyboard (no break check)
$FF08	_GETC	Get one character from the keyboard (with break check)
$FF09	_PRINT	Print string
$FF0A	_GETS	Get character string (with break check)
$FF0B	_KEYSNS	Key input state check
$FF0C	_KFLUSH	Keyboard input after buffer flush
$FF0D	_FFLUSH	Disk reset
$FF0E	_CHGDRV	Current drive setting
$FF0F	_DRVCTRL	Drive status check/setting

Code	Name	Description
$FF10	_CONSNS	Screen output check
$FF11	_PRNSNS	Printer output check
$FF12	_CINSNS	RS-232C input check
$FF13	_COUTSNS	RS-232C output check
$FF17	_FATCHK	File concatenation state check
$FF18	_HENDSP	Kanji conversion control
$FF19	_CURDRV	Get current drive
$FF1A	_GETSS	Get character string (no break check)
$FF1B	_FGETC	Get character from file
$FF1C	_FGETS	Get string from file
$FF1D	_FPUTC	Write one character to file
$FF1E	_FPUTS	Write string to file
$FF1F	_ALLCLOSE	Close all files

Code	Name	Description
$FF20	_SUPER	Supervisor/user mode setting
$FF21	_FNCKEY	Get/set redefinable key
$FF22	_KNJCTRL	Kana-to-kanji conversion
$FF23	_CONCTRL	Console control/direct output
$FF24	_KEYCTRL	Console state check/direct input
$FF25	_INTVCS	Set vector processing address
$FF26	_PSPSET	Create process management pointer
$FF27	_GETTIM2	Get time (longword)
$FF28	_SETTIM2	Set time (longword)
$FF29	_NAMESTS	Filename expansion
$FF2A	_GETDATE	Get date
$FF2B	_SETDATE	Set date
$FF2C	_GETTIME	Get time
$FF2D	_SETTIME	Set time
$FF2E	_VERIFY	Set verify flag
$FF2F	_DUP0	Force file handle copy

Code	Name	Description
$FF30	_VERNUM	Get OS version
$FF31	_KEEPPR	Terminate and stay resident
$FF32	_GETDPB	Get drive parameter block
$FF33	_BREAKCK	Set break check
$FF34	_DRVXCHG	Replace drive
$FF35	_INTVCG	Get vector processing address
$FF36	_DSKFRE	Get disk space remaining
$FF37	_NAMECK	Filename expansion
$FF39	_MKDIR	Create subdirectory
$FF3A	_RMDIR	Remove subdirectory
$FF3B	_CHDIR	Change current directory
$FF3C	_CREATE	Create file
$FF3D	_OPEN	Open file
$FF3E	_CLOSE	Close file
$FF3F	_READ	Read file

Code	Name	Description
$FF40	_WRITE	Write file
$FF41	_DELETE	Delete file
$FF42	_SEEK	Seek file
$FF43	_CHMOD	Set/get file modes
$FF44	_IOCTRL	Device driver ioctrl direct I/O
$FF45	_DUP	Copy file handle
$FF46	_DUP2	Force copy file handle
$FF47	_CURDIR	Get current directory
$FF48	_MALLOC	Allocate memory
$FF49	_MFREE	Free memory
$FF4A	_SETBLOCK	Change memory block
$FF4B	_EXEC	Load/execute program
$FF4C	_EXIT2	Exit with return code
$FF4D	_WAIT	Get process end return code
$FF4E	_FILES	Search files
$FF4F	_NFILES	Search next files

Code	Name	Description
$FF80	_SETPDB	Change process information
$FF81	_GETPDB	Get process information
$FF82	_SETENV	Set environment variable
$FF83	_GETENV	Get environment variable
$FF84	_VERIFYG	Get verify flag
$FF85	_COMMON	COMMON area control
$FF86	_RENAME	Rename/move file
$FF87	_FILEDATE	Get/set file date
$FF88	_MALLOC2	Alloc memory
$FF8A	_MAKETMP	Create temporary file
$FF8B	_NEWFILE	Create new file
$FF8C	_LOCK	Lock file
$FF8F	_ASSIGN	Get/set/cancel virtual drive/directory assignment

Code	Name	Description
$FFAA	FFLUSH	Set FFLUSH mode (undocumented)
$FFAB	_OS_PATCH	Hook OS internal function (undocumented)
$FFAC	_GETFCB	Get FCB pointer (undocumented)
$FFAD	_S_MALLOC	Alloc memory using main memory management
$FFAE	_S_MFREE	Free memory using main memory management
$FFAF	_S_PROCESS	Sub memory management setting

Code	Name	Description
$FFF0	_EXITVC	(program end execution address)
$FFF1	_CTRLVC	(CTRL+C execution address at abort)
$FFF2	_ERRJVC	(Error abort execution address)
$FFF3	_DISKRED	Block device direct input
$FFF4	_DISKWRT	Block device direct output
$FFF5	_INDOSFLG	Get OS work pointer
$FFF6	_SUPER_JSR	Supervisor subroutine call
$FFF7	_BUS_ERR	Check for bus error
$FFF8	_OPEN_PR	Register background task
$FFF9	_KILL_PR	Remove background task
$FFFA	_GET_PR	Get thread management information
$FFFB	_SUSPEND_PR	Force thread to sleep
$FFFC	_SLEEP_PR	Sleep thread
$FFFD	_SEND_PR	Transmit thread command/data
$FFFE	_TIME_PR	Get timer counter value
$FFFF	_CHANGE_PR	Execution right abandonment(?) 実行権放棄

Error code list

Hex code	Byte code	Description
$FFFFFFFF	-1	Invalid function code executed
$FFFFFFFE	-2	File not found
$FFFFFFFD	-3	Directory not found
$FFFFFFFC	-4	Too many open files
$FFFFFFFB	-5	Directory and volume label inaccessible
$FFFFFFFA	-6	The specified handle is not open
$FFFFFFF9	-7	The memory management area was destroyed
$FFFFFFF8	-8	Not enough memory for execution
$FFFFFFF7	-9	Invalid memory management pointer specified
$FFFFFFF6	-10	Illegal environment specified
$FFFFFFF5	-11	Abnormal executable file format
$FFFFFFF4	-12	Abnormal open access mode
$FFFFFFF3	-13	Invalid file name
$FFFFFFF2	-14	Called with invalid parameter
$FFFFFFF1	-15	Invalid drive specified
$FFFFFFF0	-16	Current directory can't be deleted
$FFFFFFEF	-17	ioctrl can not be used
$FFFFFFEE	-18	No more files found
$FFFFFFED	-19	The file can't be written
$FFFFFFEC	-20	The directory already exists
$FFFFFFEB	-21	File can't be deleted
$FFFFFFEA	-22	File can't be renamed
$FFFFFFE9	-23	File can't be created because disk is full
$FFFFFFE8	-24	File can't be created because folder is full
$FFFFFFE7	-25	Can't seek to the specified position
$FFFFFFE6	-26	Supervisor mode require while in supervisor mode
$FFFFFFE5	-27	Thread name exists
$FFFFFFE4	-28	IPC buffer is write protected
$FFFFFFE3	-29	Can't start any more background processes
$FFFFFFE0	-32	InsuFFicient lock space
$FFFFFFDF	-33	File is locked and can't be accessed
$FFFFFFDE	-34	The drive has a handler open
$FFFFFFDD	-35	Symbolic link nest exceeded 16 links(lndrv)
$FFFFFFB0	-80	File exists

Detailed Descriptions

$FF00	<BOOKMARK:EXIT>_EXIT	Terminate program
End the program. Open file handles are closed.

—

$FF01	<BOOKMARK:GETCHAR>_GETCHAR	Wait for keyboard input(with echo)
Arg	none
Return	key code
Wait for key input and output the character to stdout. ^C - Return to the parent process ^P - Toggle output stdout to the printer also ^N - Check the printer output state

—

$FF02	<BOOKMARK:PUTCHAR>_PUTCHAR	Display character
Arg	CODE.w	Single-byte character
Return	Always 0
Outputs the character specified by CODE to stdout. It checks whether the key is ^C, ^S, ^P, or ^N.

Usage:

move	CODE,-(sp)
DOS	_PUTCHAR
addq.l	#2,sp

—

$FF03	<BOOKMARK:cominp>_COMINP	Get 1 byte from RS-232C port
Arg	None
Return	1 byte received
Receive 1 byte from the RS-232C port (with break check)

—

$FF04	<BOOKMARK:comout>_COMOUT	Send 1 byte to the RS-232C port
Arg	CODE.w	Byte code
Return	None
Send 1 byte to the RS-232C port (with break check)

Usage:

move	CODE,-(sp)
DOS	_COMOUT
addq.l	#2,sp

—

$FF05	<BOOKMARK:prnout>_PRNOUT	Output 1 character to the printer
Arg	CODE.w	Single-byte character code
Return	None
Output one character specified by CODE to the printer (with break check). Because the high-order byte of CODE must be 0, kanji is output by sending two bytes in a row in the order of high byte first, then low byte.

Usage:

move	CODE,-(sp)
DOS	_PRNOUT
addq.l	#2,sp

—

$FF06	<BOOKMARK:INPOUT>_INPOUT	Key input/output
Arg	CODE.w	Single-byte character code
Return	CODE=0xFF,0xFE, Input key code (no input if d0.l =0) CODE=other, d0.l=0
If the CODE value is 0xFF if the key is not pressed it returns 0 immediately. If CODE=0xFE the key is read and the value stays in the buffer. If CODE is any other value it is regarded as a character code and displayed.

Usage:

move	CODE,-(sp)
DOS	_INPOUT
addq.l	#2,sp

—

$FF07	<BOOKMARK:inkey>_INKEY	Enter one character from the keyboard (no break check)
Arg	none
Return	Key code
Wait until a key is pressed and return the key code.

—

$FF08	<BOOKMARK:getc>_GETC	Enter one character from the keyboard (with break check)
Arg	none
Return	Key code
Wait until a key is pressed and return the key code. Checks for ^C, ^S, ^P, or ^N.

—

$FF09	<BOOKMARK:print>_PRINT	Print string
Arg	MESPTR.l	Pointer to string
Return	Always 0
Display the character string specified by MESPTR. Checks for ^C, ^S, ^P, or ^N.

Usage:

pea	(MESPTR)
DOS	_PRINT
addq,l	#4,sp

—

$FF0A	<BOOKMARK:gets>_GETS	Input string
Arg	BUFFER.l	Input buffer pointer
Return	Number of characters input.
Write a string of input characters up to the line feed to the input buffer specified by BUFFER. The newline character is replaced with the NULL character. Checks for ^C, ^S, ^P, or ^N. If the string exceeds the maximum number of input characters a warning is issued but it doesn't error out. Set the maximum number of input characters before calling this. If you execute it continuously with the same buffer, you can use the template function unless you clear the number of input characters obtained from the previous execution. The content of the input buffer is as follows.

Offset	Size	Description
0	1.b	Maximum number of input characters: n
1	1.b	Number of actually entered characters
2	n+1.b	Input string

Usage:

pea	(BUFFER)
DOS	_GETS
addq.l	#4,sp

—

$FF0B	<BOOKMARK:keysns>_KEYSNS	Check key input state
Arg	None
Return	Input state (0: no input, -1: input)
Examine the key input state. Checks for ^C, ^S, ^P, or ^N.

—

$FF0D	<BOOKMARK:fflush>_FFLUSH	Disk reset
Arg	None
Return	Always 0
Initialize the contents of the disk buffer and the line input buffer from standard input. Does not close the file. Do nothing if fflush=off

—

$FF0E	<BOOKMARK:chgdrv>_CHGDRV	Set current drive
Arg	DRIVE.w	Drive number (0: A 1: B … 25: Z)
Return	Number of drives available
Change the current drive. Fail if the return value is less than the specified drive number.

Usage:

move	DRIVE,-(sp)
DOS	_CHGDRV
addq.l	#2,sp

—

$FF10	<BOOKMARK:consns>_CONSNS	Check if screen output is possible
Arg	none
Return	Output status (0: output impossible, nonzero: output possible)
Check if screen output is possible.

—

$FF11	<BOOKMARK:prnsns>_PRNSNS	Check if printer output is possible
Arg	none
Return	Output status (0: output impossible, nonzero: output possible)
Check if printer output is possible.

—

$FF12	<BOOKMARK:cinsns>_CINSNS	Check if RS-232C input is possible
Arg	none
Return	Output status (0: input impossible, nonzero: input possible)
Check if RS-232C input is possible.

—

$FF13	<BOOKMARK:coutsns>_COUTSNS	Check if RS-232C output is possible
Arg	none
Return	Output status (0: output impossible, nonzero: output possible)
Check if RS-232C output is possible.

—

$FF19	<BOOKMARK:curdrv>_CURDRV	Get the current drive
Arg	None
Return	Number of the current drive (0: A 1: B … 25: Z)
Get the current drive number.

—

$FF1A	<BOOKMARK:getss>_GETSS	Input string (no break check)
Arg	BUFFER.l	Input buffer pointer
Return	Writes the input character string up to the line feed to the input buffer specified by BUFFER. Newline characters are replaced with NULL characters. Does not perform break check(do not break at VOID/NEWLINE) If the length exceeds the maximum number of input characters allowed a warning is issued but execution does not stop. The contents of the input buffer are as follows.
Get the current drive number.

Offset	Size	Desciption
0	1.b	Maximum input characters allowed: n
1	1.b	Number of characters actually entered
2	n+1.b	Input string

—

$FF1B	<BOOKMARK:fgetc>_FGETC	Get one byte from file
Arg	FILENO.w	File handle
Return	One byte read from file
Wait until there is input from the file handle specified by FILENO and return the code if there is input.

—

$FF1C	<BOOKMARK:fgets>_FGETS	Get string input from file handle
Arg 1	BUFFER.l	Input buffer pointer
Arg 2	FILENO.w	File handle
Return	Number of characters read
Get a character string from the file handle specified by FILENO up to the line feed and write it to the input buffer specified by BUFFER. Newline characters are replaced with null characters, no break check is done (do not break at VOID/NEWLINE). If it exceeds the maximum number of input characters it terminates early, truncating the string to the maximum number of input characters allowed. The contents of the input buffer are as follows.

Offset	Size	Description
0	1.b	Maximum input characters: n
1	1.b	Number of actually entered characters
2	n+1.b	Input string

Usage:

move	FILENO,-(sp)
pea	(BUFFER)
DOS	_FGETS
addq.l	#6,sp

—

$FF1D	<BOOKMARK:fputc>_FPUTC	Output one byte to file handle
Arg 1	CODE.w	Byte code
Arg 2	FILENO.w	File handle
Return	None
Write 1 byte from CODE to the file specified by FILENO.

move	FILENO,-(sp)
move	CODE,-(sp)
DOS	_FPUTC
addq.l	#4,sp

—

$FF1E	<BOOKMARK:fputc>_FPUTS	Output string to file handle
Arg 1	MESPTR.l	Pointer to string
Arg 2	FILENO.w	File handle
Return	None
Write the string pointed to by MESPTR to the file specified in FILENO. Does not output the NULL character at the end of the string.

Usage:

move	FILENO,-(sp)
pea	(MESPTR)
DOS	_FPUTS
addq.l	#6,sp

—

$FF1F	<BOOKMARK:allclose>_ALLCLOSE	Close all files
Arg	None
Return	None
Close all open files

—

$FF20	<BOOKMARK:super>_SUPER	Supervisor/User mode switching
Arg	STACK.l	Switching mode (0 or address set in SSP)
Return	STACK=0 Value of the previous SSP (error code if negative) Switch the supervisor/user mode according to the value of STACK STACK=other Set STACK to SSP and switch to user mode.
Close all open files

Usage:

pea	(STACK)
DOS	_SUPER
addq.l	#4,sp

—

$FF30	<BOOKMARK:vernum>_VERNUM	OS version check
Arg	None
Return	Version number
Check the verion number of Human68k bit 31~24 '6' (0x36) bit 23~16 '8' (0x38) 15~8 integer part of version number bit 7~0 Decimal part of version number.

—

$FF36	<BOOKMARK:dskfre>_DSKFRE	Get the available space on the disk
Arg	DRIVE.w	Drive number
Return	Number of free bytes (2GB maximum, error code if negative)
Get the remaining free space of the drive specified by DRIVE and write it to the following 8 bytes to BUFFER.

Offset	Size	Description
0	1.w	Number of free clusters
2	1.w	Total number of clusters
4	1.w	Number of sectors per cluster
6	1.w	Number of bytes per sector

Usage:

pea	(BUFFER)
move	DRIVE,-(sp)
DOS	_DSKFRE
addq.l	#6,sp

—

$FF39	<BOOKMARK:mkdir>_MKDIR	Create subdirectory
Arg	FILE.l	Pointer to directory name
Return	Error code
Create the subdirectory specified by FILE. When the call is successful the return value is usually 0, but when a special device driver is targeted, a positive integer may be returned.

Usage:

pea	(FILE)
DOS	_MKDIR
addq.l	#4,sp

—

$FF3A	<BOOKMARK:rmdir>_RMDIR	Delete subdirectory
Arg	FILE.l	Pointer to directory name
Return	Error code
Delete the subdirectory specified by FILE. The directory must be empty and you can't delete the current directory, the root directory, directories with the system or read-only attribute. When the call is successful the return value is usually 0, but when a special device driver is targeted, a positive integer may be returned.

Usage:

pea	(FILE)
DOS	_RMDIR
addq.l	#4,sp

—

$FF3B	<BOOKMARK:chdir>_CHDIR	Change current directory
Arg	FILE.l	Pointer to directory name
Return	Error code
Change the current directory to the directory specified by FILE. When the call is successful the return value is usually 0, but when a special device driver is targeted, a positive integer may be returned. It does not work properly with Human68k version 3.02, change to a subdirectory with length of 22 characters fails.

Usage:

pea	(FILE)
DOS	_RM==CHDIR
addq.l	#4,sp

—

$FF3C	<BOOKMARK:create>_CREATE	Create file
Arg 1	FILE.l	Pointer to file name
Arg 2	ATR.w	file attribute (%XLAD_VSHR)
Return	The file handle of the created file. If negative, an error occured.
Create the specified file specified by FILE with the attributes specified in ATR. If ATR is 0, it is interpreted as the Archive attribute. If the file already exists the contents of that file will be lost. Directories, volume labels, and files with the System attribute are read-only and will not be deleted. When the MSB of ATR is set, even if the file already exists, it will not be deleted.

Usage:

move	ATR,-(sp)
pea	(FILE)
DOS	_CREATE
addq.l	#6,sp

—

$FF3D	<BOOKMARK:open>_OPEN	Open file
Arg 1	FILE.l	Pointer to file name
Arg 2	MODE.w	Access mode
Return	The file handle of the opened file. If negative, an error occured.
Open the file specified by FILE in the access mode specified by MODE. If the file has the read-only attribute it will not open with write or read/write mode. Valid values for mode: bit 8 - Dictionary access mode * %1 - A special file handle is used for dictionary. (Use is prohibited) * %0 - normal bit 6~4 - Sharing mode * %100 always set * %011 - Write only allowed * %010 Read only allowed * %001 Prohibited * %000 Compatibility mode bit 1 to 0 - Read/write mode * %10 Read/write mode * %01 Write mode * %00 read mode The sharing mode specified by bits 6~4 regulates sharing files between multiple processes. When multiple processes are running, each process can read and write the same file at the same time. This is potentially risky behavior and you should always specify an appropriate sharing mode to maintain exclusive control of file access.

Usage:

move	MODE,-(sp)
pea	(FILE)
DOS	_OPEN
addq.l	#6,sp

—

$FF3E	<BOOKMARK:close>_CLOSE	Close file
Arg	FILENO.w	File handle
Return	Error code
Close the file handle specified by FILENO.

Usage:

move	FILENO,-(sp)
DOS	_CLOSE
addq.l	#2,sp

—

$FF3F	<BOOKMARK:read>_READ	Read file
Arg 1	FILENO.w	File handle
Arg 2	BUFFER.l	Pointer to read buffer
Arg 3	LEN.l	Number of bytes to read
Return	Number of bytes actually read. If negative, an error occured.
Read the number of bytes speficied in LEN to the buffer specified in BUFFER from the file handle FILENO. After execution the file pointer moves backward(?) by the number of bytes read. If LEN=0, read from the current file pointer to the end of the file. If the return value is less than the specified number of bytes it means that the file has been read to the end.

Usage:

move.l	LEN,-(sp)
pea	(BUFFER)
move	FILENO,-(sp)
DOS	_READ
lea	(10,sp),sp

—

$FF40	<BOOKMARK:write>_WRITE	Write file
Arg 1	FILENO.w	File handle
Arg 2	BUFFER.l	Write buffer pointer
Arg 2	LEN.l	Number of bytes to write
Return	Number of bytes actually written. If negative, an error occured.
Write the number of bytes specified in LEN to the buffer specified in BUFFER from the file handle FILENO. After execution the file pointer moves backward(??) by the number of bytes writte. When the return value is less than the bytes specified this means the disk is full.

Usage:

move.l	LEN,-(sp)
pea	(BUFFER)
move	FILENO,-(sp)
DOS	_WRITE
lea	(10,sp),sp

—

$FF41	<BOOKMARK:delete>_DELETE	Delete file
Arg	FILE.l	Pointer to file name
Return	Error code
Delete the file specified by FILE. You can not use wildcards, delete directories or volume labels, or files with the system or read-only attributes.

Usage:

pea	(FILE)
DOS	_DELETE
addq.l	#4,sp

—

$FF42	<BOOKMARK:seek>_SEEK	Move file pointer
Arg 1	FILENO.w	File handle
Arg 2	MODE.w	Movement mode
Return	Offset from the beginning of the file.
The pointer of the file specified by FILENO is moved based on the specified MODE and OFFSET. Attempts to move past the beginning or end of the file results in an error. The character device can't seek and the current position will always return 0. MODE = 0 - Start MODE = 1 - Current position (Negative offsets will move the pointer forward) MODE = 2 - EOF (offset must be less than or equal to 0.)

Usage:

move	MODE,-(sp)
move.l	OFFSET,-(sp)
move	FILENO,-(sp)
DOS	_SEEK
addq.l	#8,sp

—

$FF47	<BOOKMARK:curdir>_CURDIR	Get the current directory
Arg 1	DRIVE.w	Drive number (0: current 1: A 2: B … 26: Z)
Arg 2	BUFFER.l	Buffer pointer
Return	Error code
Write the current directory of the drive specified by DRIVE into the 65 byte buffer specified by BUFFER. Does not add '\' to the root directory or '\' to the end of the string.

Usage:

pea	(BUFFER)
move	DRIVE,-(sp)
DOS	_CURDIR
addq.l	#6,sp

—

$FF48	<BOOKMARK:malloc>_MALLOC	Reserve memory
Arg	LEN.l	Number of bytes to reserve
Return	Pointer of allocated memory block (MSP+0x10) d0.l = 0x81?????? the specified amount can't be reserved (0x?????? is the number of bytes that can be reserved). d0.l = 0x8200000? Impossible to completely reserve (0x? is indeterminate).
Reserve memory with the number of bytes specified by LEN. If LEN is greater than 0x1000000 it is always an error and it is possible to check the maximum number of bytes that can be reserved.

Usage:

move.l	LEN,-(sp)
DOS	_MALLOC
addq.l	#4,sp

—

$FF49	<BOOKMARK:mfree>_MFREE	Release reserved memory
Arg	MEMPTR.l	Pointer to memory block
Return	Error code
Releases the memory block specified by MEMPTR. When MEMPTR=0, release all memory reserved by you.

Usage:

pea	(MEMPTR)
DOS	_MFREE
addq.l	#4,sp

—

$FF4A	<BOOKMARK:setblock>_SETBLOCK	Resize memory block
Arg 1	MEMPTR.l	Pointer to memory block
Arg 2	LEN.l	Number of bytes to reserve
Return	Error code d0.l=0x81?????? Unmodifiable (0x?????? is the number of changeable bytes) d0.l=0x8200000? Completely unmodifyable (0x? is indeterminate)
Change the memory block specified by MEMPTR to the size specified by LEN. If LEN is greater than 0x1000000 it is always an error and it is possible to check the maximum number of bytes that can be changed.

Usage:

move.l	LEN,-(sp)
pea	(MEMPTR)
DOS	_SETBLOCK
addq.l	#8,sp

—

$FF4C	<BOOKMARK:exit2>_EXIT2	Exit with return code
Arg	CODE.w	Exit code
Return	None
Quit the program with the exit code specified by CODE. The opened file handles are closed.

—

$FF4D	<BOOKMARK:wait>_WAIT	Get process exit code
Arg	None
Return	Exit code
Examine the exit code of the executed process. It is the same as the return value of DOS _EXEC(MODE=0,4)

—

$FF8A	<BOOKMARK:maketmp>_MAKETMP	Create temporary file
Arg 1	FILE.l	Pointer to file name
Arg 2	ATR.w	File attribute (%XLAD_VSHR)
Return	The file handle of the created file. If negative, an error occured.
Create a temporary file specified by FILE with attributes ATR. The file name can contain '?', it is replaced by a number when created. It increments until it becomes a file name that does not exist then creates it. Note that the file name specified by FILE can be rewritten by this DOS call.

Usage:

move	ATR,-(sp)
pea	(FILE)
DOS	_MAKETMP
addq.l	#6,sp

—

$FF8B	<BOOKMARK:newfile>_NEWFILE	Create new file
Arg 1	FILE.l	Pointer to file name
Arg 2	ATR.w	File attribute (%XLAD_VSHR)
Return	The file handle of the created file. If negative, an error occured.
Create a temporary file specified by FILE with attributes ATR. If ATR is 0 it is equivalent to the archive attribute. If the file already exists it returns an error (-80).

Usage:

move	ATR,-(sp)
pea	(FILE)
DOS	_MAKETMP
addq.l	#6,sp

NFG Games + GameSX

Table of Contents

DOS CALL MANUAL

DOS Call List

Error code list

Detailed Descriptions