Index for interrupt INT D4
Table of Contents by Order
D4 - INT D4 - IBM ROM BASIC - used while in interpreter
D4 - INT D4 - STSC APL*PLUS/PC - MAY BE USED IN FUTURE RELEASES
D400 - INT D4 O - PC-MOS/386 v5.01 - OBSOLETE FUNCTIONS
D402 - INT D4 - PC-MOS/386 v3.0+ - GET SYSTEM CONTROL BLOCK POINTER
D403 - INT D4 - PC-MOS/386 v5.01 - GET/SET EXTENDED DIRECTORY INFORMATION
D404 - INT D4 - PC-MOS/386 v3.0+ - GET TASK CONTROL BLOCK
D407 - INT D4 - PC-MOS/386 v3.0+ - WAIT FOR EVENT
D410 - INT D4 - PC-MOS/386 v3.0+ - ENTER/LEAVE NATIVE 386 EXECUTION MODE
D411 - INT D4 - PC-MOS/386 v3.0+ - ALLOCATE NATIVE MODE MEMORY BLOCK
D412 - INT D4 - PC-MOS/386 v3.0+ - FREE NATIVE MODE MEMORY BLOCK
D413 - INT D4 - PC-MOS/386 v5.01 - GET ALIAS FOR SELECTOR (NATIVE MODE ONLY)
D416 - INT D4 - PC-MOS/386 v5.01 - SET/CLEAR IRQ RESERVATION
D419 - INT D4 - PC-MOS/386 v5.01 - GET TASK ID
D41A - INT D4 - PC-MOS/386 v5.01 - GET/SET TASK PRIORITY
D41B - INT D4 - PC-MOS/386 v5.01 - GET/SET TIME SLICE
D41C - INT D4 - PC-MOS/386 v5.01 - GET/SET KEYBOARD MODE
D41D - INT D4 - PC-MOS/386 v5.01 - GET CURRENT PROGRAM NAME
D41E - INT D4 - PC-MOS/386 v5.01 - GET CURRENT USERNAME AND SECURITY CLASS
D41F - INT D4 - PC-MOS/386 v5.01 - GET TASK PARTITION INFORMATION
D420 - INT D4 - PC-MOS/386 v5.01 - GET PORT AND BAUDRATE INFORMATION
D421 - INT D4 - PC-MOS/386 v5.01 - REMOVE A TASK
D422 - INT D4 - PC-MOS/386 v5.01 - ADD A TASK TO THE SYSTEM
D423 - INT D4 - PC-MOS/386 v5.01 - CHANGE TERMINAL DRIVER
D424 - INT D4 U - PC-MOS/386 v5.01 - GET OPERATING SYSTEM SERIAL NUMBER
D425 - INT D4 - PC-MOS/386 v5.01 - IDENTIFY LOAD ADDRESS OF DEVICE DRIVER LOCATION
D426 - INT D4 - PC-MOS/386 v5.01 - GET SYSTEM CONTROL BLOCK SEGMENT/SELECTOR
D427 - INT D4 - PC-MOS/386 v5.01 - GET TASK CONTROL BLOCK SEGMENT/SELECTOR
D428 - INT D4 - PC-MOS/386 v5.01 - GET CONTROL BLOCK DATA FROM SCB OR TCB
D429 - INT D4 - PC-MOS/386 v5.01 - WRITE CONTROL BLOCK DATA INTO SCB OR TCB
D42A - INT D4 - PC-MOS/386 v5.01 - SWAP CONTROL BLOCK DATA OF SCB OR TCB
D42C - INT D4 - PC-MOS/386 v5.01 - GET/SET SPOOLER PARAMETERS
D42D - INT D4 - PC-MOS/386 v5.01 - GET MAXIMUM TASK SIZE
INT D4 - IBM ROM BASIC - used while in interpreter Notes: called by ROM BASIC BASIC.COM/BASICA.COM do not restore vector on termination SeeAlso: INT 80"BASIC",INT D3"BASIC",INT D5"BASIC"Top
INT D4 - STSC APL*PLUS/PC - MAY BE USED IN FUTURE RELEASESTop
INT D4 O - PC-MOS/386 v5.01 - OBSOLETE FUNCTIONS AH = 00h and 01h Return: nothing Desc: PC-MOS/386 v5.01 reports that these functions are no longer supported and enters an endless loop Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc.Top
INT D4 - PC-MOS/386 v3.0+ - GET SYSTEM CONTROL BLOCK POINTER AH = 02h Return: AX = 0000h ES:BX -> System Control Block in V86 mode (see #04004) ES:EBX -> System Control Block in native mode (see #04004) Note: superseded by AH=26h SeeAlso: AH=04h,AH=10h,AH=26h,AH=28h,AH=29h,AH=2Ah,INT 21/AX=3000h,INT 38 Format of PC-MOS/386 System Control Block: Offset Size Description (Table 04004) 00h WORD pointer to first TCB in chain 02h 17 BYTEs reserved 13h WORD pointer to current task's TCB 15h WORD pointer to TCB of visible (console) taskTop
INT D4 - PC-MOS/386 v5.01 - GET/SET EXTENDED DIRECTORY INFORMATION
AH = 03h
AL = subfunction (00h get, 01h set)
DS:(E)DX -> pathname
ES:(E)BX -> 10-byte buffer for directory information (see #04005)
Return: CF clear if successful
AL = permitted access level for file (00h-03h)
ES:(E)BX -> modified buffer (AL=01h on entry)
CF set on error
AX = error code (see #01680 at INT 21/AH=59h/BX=0000h)
Notes: BX/DX are used in V86 mode, EBX/EDX in native mode
the file class cannot be changed for files because it affects the
encryption method, but directories can have their classes changed
Format of PC-MOS/386 directory information:
Offset Size Description (Table 04005)
00h BYTE reserved (0)
01h BYTE file class ('A'-'Z' or 00h)
02h DWORD user ID of file creator
06h WORD file creation time (see #01665 at INT 21/AX=5700h)
08h WORD file creation date (see #01666 at INT 21/AX=5700h)
Top
INT D4 - PC-MOS/386 v3.0+ - GET TASK CONTROL BLOCK AH = 04h BX = task ID or FFFFh for calling task Return: CF clear if successful ES = segment of Task Control Block (TCB) (see #04006) CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Note: superseded by AH=27h SeeAlso: AH=02h,AH=27h,AH=28h,AH=29h,AH=2Ah,INT 38 Format of PC-MOS/386 Task Control Block: Offset Size Description (Table 04006) 00h BYTE signature byte "H" if allocated from system memory pool 01h BYTE header block ID, "T" = TCB 02h WORD length of block in paragraphs 04h WORD segment address of next header block (0000h if last) 06h WORD segment address of previous header block (0000h if first) 08h WORD pointer to next TCB 0Ah WORD pointer to previous TCB 0Ch WORD pointer to associated TCB (if applicable) 0Eh WORD reserved ---TCB--- 10h WORD TCB task ID 12h WORD native context save area 14h WORD start address of task 16h WORD end address of task 18h BYTE task priority 19h BYTE task time slice 1Ah BYTE "TCBWAIT" run status of task 1Bh BYTE "TCBSTAT" what the task is waiting for 1Ch DWORD address of polling routine 20h BYTE error code from last function call 21h 11 BYTEs name of currently executing task 2Ch 4 BYTEs ??? 30h BYTE keyboard disabled if bit 1 set 31h BYTE current shift state and toggles 32h 2 BYTEs ??? 34h BYTE current video mode 35h BYTE current video page 36h BYTE number of text columns per screen 37h BYTE number of text rows per screen 38h WORD length of video buffer 3Ah WORD video page length 3Ch WORD apge start address in video RAM 3Eh 4 WORDs current cursor positions for four screen pages 46h 8 BYTEs ??? 4Eh WORD current cursor type 50h BYTE current palette setting 51h BYTE original video mode 52h BYTE start CRT row (00h or 01h) 53h BYTE video RAM in task active 54h WORD handle of video save area 56h WORD page count of video save area 58h WORD segment address of video save area 5Ah WORD poitner to first Task File Block (see #04009) 5Ch WORD pointer to first Current Directory Block (see #04012) 5Eh WORD pointer to active Current Directory Block (see #04012) 60h BYTE number of drives 61h BYTE current drive (0=A:, etc.) 62h DWORD disk transfer address 66h 4 BYTEs ??? 6Ah BYTE verify flag (nonzero = on) 6Bh BYTE break flag (nonzero = on) 6Ch WORD share/lock retry count 6Eh WORD ticks between share/lock retries 70h BYTE remote printer flags (see #04007) 71h BYTE ETX/ACK delay count 72h WORD spooler segment address 74h 2 BYTEs ??? 76h 3 BYTEs remote printer redirection for LPT1 through LPT3 (see #04008) 79h 2 BYTEs ??? 7Bh DWORD offset of username in TCB 7Fh BYTE current output class 80h 7 BYTEs protection access rights, 2 bits per class (writeable!) 87h 122 BYTEs ??? 101h BYTE TCB sleep downcounter value 102h 20 BYTEs ??? 116h BYTE last scan code ... 5D0h DWORD far pointer to Device Driver Terminal's entry point 5D4h WORD offset of logical screen 5D6h WORD segment of logical screen 5D8h WORD cursor offset within page 5DAh BYTE screen columns 5DBh WORD async port number (0000h = none) 5DDh DWORD physical baudrate 5E1h 19 BYTEs reserved for Device Driver Terminal (DDT) ... 7A6h DWORD far pointer to unregister calling chain Bitfields for PC-MOS/386 remote printer flags: Bit(s) Description (Table 04007) 0 LPT1 to terminal 1 LPT2 to terminal 2 LPT3 to terminal 3 escape to printer pending 4 use XON/XOFF 5 use ETX/ACK 6 waiting for ACK or XON 7 transparent printing on (Table 04008) Values for PC-MOS/386 remote printer redirection: 00h not redirected 01h redirected to COM1 ... 18h redirected to COM24 51h redirected to LPT1 52h redirected to LPT2 53h redirected to LPT3 Format of PC-MOS/386 Task File Block: Offset Size Description (Table 04009) 00h BYTE signature byte "H" if allocated from system memory pool 01h BYTE header block ID, "F" = task file block 02h WORD length of block in paragraphs 04h WORD segment address of next header block (0000h if last) 06h WORD segment address of previous header block (0000h if first) 08h WORD pointer to next TCB 0Ah WORD pointer to previous TCB 0Ch WORD pointer to associated TCB (if applicable) 0Eh WORD reserved ---TFB--- 10h WORD segment address of next TFB 12h WORD segment address of previous TFB 14h WORD segment address of TFB's Global File Block (see #04011) 16h WORD segment address of owner's PSP 18h WORD file handle 1Ah 3 BYTEs ??? 1Dh DWORD file position 21h 4 BYTEs ??? 25h BYTE IOCTL flags (see #04010) 26h 2 BYTEs ??? Bitfields for PC-MOS/386 IOCTL flags: Bit(s) Description (Table 04010) 0 stdin 1 stdout 2 null device 3 clock device 4 reserved 5 ASCII mode instead of binary 6 EOF encountered on input 7 device rather than file Format of PC-MOS/386 Global File Block: Offset Size Description (Table 04011) 00h BYTE signature byte "H" if allocated from system memory pool 01h BYTE header block ID, "G" = global file block 02h WORD length of block in paragraphs 04h WORD segment address of next header block (0000h if last) 06h WORD segment address of previous header block (0000h if first) 08h WORD pointer to next TCB 0Ah WORD pointer to previous TCB 0Ch WORD pointer to associated TCB (if applicable) 0Eh WORD reserved ---GFB--- 10h 10 BYTEs ??? 1Ah WORD file attribute 1Ch BYTE ??? 1Dh DWORD address of device driver 21h WORD first cluster 23h WORD time of last modification 25h WORD date of last modification 27h DWORD size of file in bytes 2Bh 11 BYTEs ??? 36h 11 BYTEs device name or FCB-format filename 41h WORD segment address of TFB list 43h WORD segment address of first RLB (see #04014) (0000h = none) 45h BYTE flag: nonzero if GFB refers to character device 46h WORD address of Block Device Block (see #04013) 48h WORD sector of file's directory entry (see #01352) 4Ah WORD high word of file's directory entry 4Ch WORD ofsset of directory entry within sector Format of PC-MOS/386 Current Directory Block: Offset Size Description (Table 04012) 00h BYTE signature byte "H" if allocated from system memory pool 01h BYTE header block ID, "C" = current directory block 02h WORD length of block in paragraphs 04h WORD segment address of next header block (0000h if last) 06h WORD segment address of previous header block (0000h if first) 08h WORD pointer to next TCB 0Ah WORD pointer to previous TCB 0Ch WORD pointer to associated TCB (if applicable) 0Eh WORD reserved ---CDB--- 10h BYTE drive number 11h BYTE ??? 12h 64 BYTEs directory name 52h WORD first directory cluster (0000h = root) Format of PC-MOS/386 Block Device Block: Offset Size Description (Table 04013) 00h BYTE signature byte "H" if allocated from system memory pool 01h BYTE header block ID, "B" = block device block 02h WORD length of block in paragraphs 04h WORD segment address of next header block (0000h if last) 06h WORD segment address of previous header block (0000h if first) 08h WORD pointer to next TCB 0Ah WORD pointer to previous TCB 0Ch WORD pointer to associated TCB (if applicable) 0Eh WORD reserved ---BDB--- 10h BYTE logical drive 11h BYTE unit passed to driver 12h WORD sector size 14h BYTE cluster mask 15h BYTE cluster shift count 16h WORD starting sector of first FAT 18h BYTE number of FATs 19h WORD number of root directories 1Bh WORD sector number of first data sector (cluster 0002h) 1Dh WORD number of clusters + 1 (number of highest data cluster) 1Fh BYTE number of sectors in FAT 20h WORD beginning root directory sector number 22h DWORD device driver address 26h BYTE media descriptor byte 27h 5 BYTEs ??? 2Ch BYTE flag: volume > 32MB 2Dh BYTE ??? 2Eh BYTE number of sectors per cluster 2Fh WORD number of clusters on device 31h WORD number of free clusters (FFFFh = unknown) 33h WORD root directory cluster number 35h WORD pointer to alias/subst string 37h WORD TCB segment address of owner (0000h = none) Format of PC-MOS/386 Record Lock Block: Offset Size Description (Table 04014) 00h BYTE signature byte "H" if allocated from system memory pool 01h BYTE header block ID, "R" = record lock block 02h WORD length of block in paragraphs 04h WORD segment address of next header block (0000h if last) 06h WORD segment address of previous header block (0000h if first) 08h WORD pointer to next TCB 0Ah WORD pointer to previous TCB 0Ch WORD pointer to associated TCB (if applicable) 0Eh WORD reserved ---RLB--- 10h WORD segment address of owner's PSP 12h WORD segment address of Global File Block (see #04011) 14h WORD segment address of owner's Task File Block (see #04009) 16h DWORD file offset of locked region start 1Ah DWORD length of locked region 1Eh WORD owner's handle for fileTop
INT D4 - PC-MOS/386 v3.0+ - WAIT FOR EVENT AH = 07h AL = events to monitor (see #04015) BX = number of timer ticks until timeout if AL bit 1 set CX = bitmap of IRQs to monitor if AL bit 2 set (bit 0 = IRQ0 .. bit 15 = IRQ15) DX = port to monitor if AL bit 3 set Return: CF clear if successful AL = type of event which woke up task (see #04015) CX = IRQ (if any) which awakened task DX = port (if any) which awakened task CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Note: a device driver may make this call with AL=00h, which indicates that the driver is responsible for setting and clearing the TCBWAIT field in the TCB. To put task to sleep, set TCBWAIT bits 2-0 to 001; to reawaken it, set bit 1 (leaving other bits unchanged) SeeAlso: AH=04h,INT 16/AH=00h,INT 38 Bitfields for PC-MOS/386 events to monitor: Bit(s) Description (Table 04015) 0 keystroke 1 timeout 2 IRQ 3 port access 7 return status of user poll routine (other ignored if set)Top
INT D4 - PC-MOS/386 v3.0+ - ENTER/LEAVE NATIVE 386 EXECUTION MODE AH = 10h AL = direction (00h return to V86 mode, 01h enter native mode) CX = length in bytes of Native Context Area ( >=1024 ) DX = segment of Native Context Area Return: CF clear if successful running in desired mode at instruction following INT D4 call all segment registers converted to appropriate selectors/segments CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Note: MS-DOS calls are available in protected mode SeeAlso: AH=11h,AH=12h,AH=13h,INT 2F/AX=1687h,INT 67/AX=DE0Ch,INT 38Top
INT D4 - PC-MOS/386 v3.0+ - ALLOCATE NATIVE MODE MEMORY BLOCK AH = 11h EBX = block length in bytes Return: CF clear if successful EBX = number of bytes actually allocated ES = selector for allocated block CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc. Note: the memory must be released before the program terminates SeeAlso: AH=10h,AH=12h,INT 38Top
INT D4 - PC-MOS/386 v3.0+ - FREE NATIVE MODE MEMORY BLOCK AH = 12h ES = selector for block to free Return: CF clear if successful CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) SeeAlso: AH=10h,AH=11h,AH=13h,INT 38Top
INT D4 - PC-MOS/386 v5.01 - GET ALIAS FOR SELECTOR (NATIVE MODE ONLY) AH = 13h AL = type of alias selector (00h data, 01h stack, 02h code) BX = selector Return: CF clear if successful AX = new selector or 0000h if BX selector not found CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) SeeAlso: AH=11h,AH=12hTop
INT D4 - PC-MOS/386 v5.01 - SET/CLEAR IRQ RESERVATION AH = 16h AL = function (00h clear, 01h set reservation) CX = IRQ number Return: AX = status (0000h successful, 0001h currently reserved by another task) SeeAlso: AH=07h,INT 14/AH=11h"PC-MOS"Top
INT D4 - PC-MOS/386 v5.01 - GET TASK ID AH = 19h Return: BX = caller's task ID Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc. SeeAlso: AH=1Dh,AH=1EhTop
INT D4 - PC-MOS/386 v5.01 - GET/SET TASK PRIORITY AH = 1Ah AL = subfunction (00h read, 01h set, 02h get and set) BX = task ID (FFFFh for current task) CL = new priority value Return: CF clear if successful CL = current priority value CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) SeeAlso: AH=1Bh,AH=1ChTop
INT D4 - PC-MOS/386 v5.01 - GET/SET TIME SLICE AH = 1Bh AL = subfunction (00h read, 01h set, 02h get and set) BX = task ID (FFFFh for current task) (see AH=19h) CL = new time slice value Return: CF clear if successful CL = current time slice value CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) SeeAlso: AH=1Ah,AH=1ChTop
INT D4 - PC-MOS/386 v5.01 - GET/SET KEYBOARD MODE AH = 1Ch AL = subfunction (00h enable, 01h disable, 02h get mode) BX = task ID (FFFFh for current task) Return: CF clear if successful CL = current keyboard state CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc. SeeAlso: AH=1Ah,AH=1BhTop
INT D4 - PC-MOS/386 v5.01 - GET CURRENT PROGRAM NAME AH = 1Dh BX = task ID (FFFFh for current task) (see AH=19h) ES:DI -> buffer for program name (see #04016) Return: CF clear if successful ES:DI buffer filled CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) SeeAlso: AH=19h,AH=1Eh Format of PC-MOS/386 program name buffer: Offset Size Description (Table 04016) 00h 8 BYTEs filename 08h 3 BYTEs extensionTop
INT D4 - PC-MOS/386 v5.01 - GET CURRENT USERNAME AND SECURITY CLASS
AH = 1Eh
BX = task ID (FFFFh for current task)
ES:DI -> 4-byte buffer for username
Return: CF clear if successful
CL = security class
20h (' ') none
41h-5Ah ('A'-'Z') security level
ES:DI buffer filled
CF set on error
AX = error code (see #01680 at INT 21/AH=59h/BX=0000h)
SeeAlso: AH=19h,AH=1Dh
Top
INT D4 - PC-MOS/386 v5.01 - GET TASK PARTITION INFORMATION AH = 1Fh BX = task ID (FFFFh for current task) (see AH=19h) Return: CF clear if successful CX = start segment of task DX = ending segment of task CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc. SeeAlso: AH=2DhTop
INT D4 - PC-MOS/386 v5.01 - GET PORT AND BAUDRATE INFORMATION AH = 20h BX = task ID (FFFFh for current task) (see AH=19h) Return: CF clear if successful CX = port number (0000h if none) DI:SI = baudrate (if CX nonzero) CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) SeeAlso: INT 14/AH=0Ch"FOSSIL"Top
INT D4 - PC-MOS/386 v5.01 - REMOVE A TASK AH = 21h BX = task ID (FFFFh for current task) (see AH=19h) Return: CF clear if successful AX = ASCII percentage of System Memory Pool used (AH = tens digit, AL = ones digit) DS,SI destroyed CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc. SeeAlso: AH=22hTop
INT D4 - PC-MOS/386 v5.01 - ADD A TASK TO THE SYSTEM
AH = 22h
DS:SI -> addtask data structure (see #04018)
Return: CF clear if successful
ES = segment address of the new task's TCB data structure
CF set on error
AX = error code (see #04017)
SeeAlso: AH=21h
(Table 04017)
Values for PC-MOS/386 error code:
08h insufficient memory
0Bh invalid addtask structure format
12h insufficient available space in system memory pool
1Fh general failure
55h already allocated
57h if task already in use or invalid parameter
Format of PC-MOS/386 addtask data structure:
Offset Size Description (Table 04018)
00h WORD task size in KB (min 16KB)
02h WORD task ID (0000h for automatic selection)
04h BYTE task class (' ' or 'A'-'Z')
05h DWORD -> ASCIZ name of task startup batchfile
09h DWORD -> task's terminal driver (0000000h = background task)
0Dh WORD task port
0Fh DWORD task baud rate
13h DWORD (ret) total extended memory
17h DWORD (ret) number of 4K extended memory pages allocated
1Bh WORD (ret) paragraphs of system memory pool allocated
1Dh WORD (ret) system memory pool size in paragraphs
1Fh WORD (ret) ASCII task percentage of system memory pool
21h 3 BYTEs reserved
Top
INT D4 - PC-MOS/386 v5.01 - CHANGE TERMINAL DRIVER AH = 23h BX = task ID (FFFFh for current task) DS:SI -> entry point of the new Device Driver Terminal Return: CF clear if successful CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h)Top
INT D4 U - PC-MOS/386 v5.01 - GET OPERATING SYSTEM SERIAL NUMBER AH = 24h Return: DS:DX -> '$'-terminated string containing the serial numberTop
INT D4 - PC-MOS/386 v5.01 - IDENTIFY LOAD ADDRESS OF DEVICE DRIVER LOCATION AH = 25h DX = driver's CS value Return: AX = segment address of driver in system memory pool (0000h if the driver is not within the system memory pool) Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc.Top
INT D4 - PC-MOS/386 v5.01 - GET SYSTEM CONTROL BLOCK SEGMENT/SELECTOR AH = 26h Return: DX = segment/selector of the System Control Block (see #04004) Note: this function supersedes AH=02h SeeAlso: AH=02h,AH=27h,AH=28h,AH=29h,AH=2AhTop
INT D4 - PC-MOS/386 v5.01 - GET TASK CONTROL BLOCK SEGMENT/SELECTOR AH = 27h BX = task ID (FFFFh if current task) (see AH=19h) Return: CF clear if successful DX = segment/selector for the Task Control Block (see #04006) CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) Note: this function supersedes AH=04h SeeAlso: AH=26h,AH=28h,AH=29h,AH=2AhTop
INT D4 - PC-MOS/386 v5.01 - GET CONTROL BLOCK DATA FROM SCB OR TCB AH = 28h BX = offset into control block at which to start reading CX = number of bytes to read DX = segment/selector of control block obtained via AH=26h or AH=27h ES:DI -> buffer for data Return: CF clear if successful CF set on error AX = error code (see also #01680 at INT 21/AH=59h/BX=0000h) 05h access denied due to an invalid segment/selector SeeAlso: AH=26h,AH=27h,AH=29h,AH=2AhTop
INT D4 - PC-MOS/386 v5.01 - WRITE CONTROL BLOCK DATA INTO SCB OR TCB AH = 29h BX = offset into control block at which to start writing CX = number of bytes to write DX = segment/selector of control block obtained via AH=26h or AH=27h DS:SI -> buffer containing data to be written Return: CF clear if successful CF set on errro AX = error code (see also #01680 at INT 21/AH=59h/BX=0000h) 05h access denied due to an invalid segment/selector Note: this function performs no bounds checking Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc. SeeAlso: AH=26h,AH=27h,AH=28h,AH=2AhTop
INT D4 - PC-MOS/386 v5.01 - SWAP CONTROL BLOCK DATA OF SCB OR TCB AH = 2Ah BX = offset into control block at which to start swap CX = number of bytes to swap DX = segment/selector of control block obtained via AH=26h or AH=27h DS:SI -> buffer containing new data and to receive current data Return: CF clear if successful CF set on error AX = error code (see also #01680 at INT 21/AH=59h/BX=0000h) 05h access denied due to an invalid segment/selector Note: the interrupts are disabled during the swap to prevent corruption SeeAlso: AH=26h,AH=27h,AH=28h,AH=29hTop
INT D4 - PC-MOS/386 v5.01 - GET/SET SPOOLER PARAMETERS AH = 2Ch AL = function 00h set spooler timeout CX = timout value in seconds 01h get spooler timeout Return: CX = current timeout in seconds 02h get spooler parameters Return: CH = priority (00h-09h) CL = disposition (d, h, i, n, s) SI = class (a - z) 03h set spooler parameters CH = priority (00h-09h) CL = disposition (d, h, i, n, s) SI = class (a - z) BX = task ID (FFFFh for current task) DX = LPT number Return: CF clear if successful CF set on error AX = error code (see #01680 at INT 21/AH=59h/BX=0000h) SeeAlso: AH=00h,AH=02h,AH=03hTop
INT D4 - PC-MOS/386 v5.01 - GET MAXIMUM TASK SIZE AH = 2Dh Return: DX = maximum task size in paragraphs BX = start address of task space Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by The Software Link, Inc. SeeAlso: AH=1Fh,AH=22hTop