Index for interrupt INT 7A

Table of Contents by Order
7A - INT 7A U - Topware Network Operating System - ???
7A - INT 7A - X.PC Packet software interface
7A - INT 7A - DJGPP GO32.EXE DOS EXTENDER - RELOCATED IRQ2
7A - INT 7A O - PRINDIR - API (moved to INT 7C, then INT 2F/AX=7F00h)
7A - INT 7A - Novell NetWare - LOW-LEVEL API - Notes
7A----BX0000 - INT 7A - Novell NetWare - IPX Driver - OPEN SOCKET
7A----BX0001 - INT 7A - Novell NetWare - IPX Driver - CLOSE SOCKET
7A----BX0002 - INT 7A - Novell NetWare - IPX Driver - GET LOCAL TARGET
7A----BX0003 - INT 7A - Novell NetWare - IPX Driver - SEND PACKET
7A----BX0004 - INT 7A - Novell NetWare - IPX Driver - LISTEN FOR PACKET
7A----BX0005 - INT 7A - Novell NetWare - IPX Driver - SCHEDULE IPX EVENT
7A----BX0006 - INT 7A - Novell NetWare - IPX Driver - CANCEL EVENT
7A----BX0007 - INT 7A - Novell NetWare - IPX Driver - SCHEDULE SPECIAL EVENT
7A----BX0008 - INT 7A - Novell NetWare - IPX Driver - GET INTERVAL MARKER
7A----BX0009 - INT 7A - Novell NetWare - IPX Driver - GET INTERNETWORK ADDRESS
7A----BX000A - INT 7A - Novell NetWare - IPX Driver - RELINQUISH CONTROL
7A----BX000B - INT 7A - Novell NetWare - IPX Driver - DISCONNECT FROM TARGET
7A----BX000C - INT 7A U - Novell NetWare - IPX Driver - internal - INITIALIZE NETWORK ADDRESS
7A----BX000D - INT 7A U - Novell NetWare - IPX Driver - internal - IPX GET PACKET SIZE
7A----BX000E - INT 7A U - Novell NetWare - IPX Driver - internal - TERMINATE SOCKETS
7A----BX000F - INT 7A - Novell NetWare - IPX Driver - INTERNAL - SEND PACKET
7A----BX0010 - INT 7A - Novell NetWare - SPX Driver - INSTALLATION CHECK
7A----BX0011 - INT 7A - Novell NetWare - SPX Driver - ESTABLISH SPX CONNECTION
7A----BX0012 - INT 7A - Novell NetWare - SPX Driver - LISTEN FOR SPX CONNECTION
7A----BX0013 - INT 7A - Novell NetWare - SPX Driver - TERMINATE SPX CONNECTION
7A----BX0014 - INT 7A - Novell NetWare - SPX Driver - ABORT SPX CONNECTION
7A----BX0015 - INT 7A - Novell NetWare - SPX Driver - GET SPX CONNECTION STATUS
7A----BX0016 - INT 7A - Novell NetWare - SPX Driver - SEND SPX PACKET
7A----BX0017 - INT 7A - Novell NetWare - SPX Driver - LISTEN FOR SPX PACKET
7A----BX0018 - INT 7A U - Novell NetWare - IPX Driver - internal - ADD DIAGNOSTIC ELEMENT
7A----BX0019 - INT 7A U - Novell NetWare - IPX Driver - internal - CANCEL DIAGNOSTIC ELEMENT
7A----BX001A - INT 7A - Novell NetWare - IPX Driver - GET DRIVER MAXIMUM PACKET SIZE
7A----BX001B - INT 7A U - Novell NetWare - IPX Driver - INTERNAL
7A----BX001C - INT 7A U - Novell NetWare - NetWare Access Server - GET ???
7A----BX001D - INT 7A U - Novell NetWare - NetWare Access Server - GET ??? ECB AND SOCKET
7A----BX001E - INT 7A U - Novell NetWare - NetWare Access Server - GET ??? ECB
7A----BX001F - INT 7A - Novell NetWare - IPXODI v2.12+ - GET IPX INFORMATION
7A----BX0020 - INT 7A - Novell NetWare - IPXODI v2.12+ - SEND WITH CHECKSUM
7A----BX0021 - INT 7A - Novell NetWare - IPXODI v2.12+ - IPX GENERATE CHECKSUM
7A----BX0022 - INT 7A - Novell NetWare - IPXODI v2.12+ - IPX VERIFY CHECKSUM
7A----BX0023 - INT 7A - Novell NetWare - IPXODI v2.12+ - OPEN LOOK-AHEAD SOCKET
7A----BX0024 - INT 7A U - Novell NetWare - IPXODI v2.20+ - SET INTERNETWORK ADDRESS
7A0001 - INT 7A R - AutoCAD Device Interface - DISPLAY - INITIALIZE (INIT1)
7A0200BX0000 - INT 7A R - AutoCAD Device Interface - RENDERING DEVICE - INITIALIZE (RDLINKUP)
7A04 - INT 7A - IBM 3270 Workstation Program API - CREATE A QUEUE
7A06 - INT 7A - IBM 3270 Workstation Program API - DELETE A QUEUE
7A07D0 - INT 7A R - AutoCAD Device Interface - Compaq VGADI41.EXE - GET ENTRY POINT
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - SESSION SERVICES
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - KEYBOARD SERVICES
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - WINDOW SERVICES
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - PRESENTATION SPACE SERVICES
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - 3270 EMULATION
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - OPERATOR INFORMATION AREA
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - TRANSLATE DATA
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - COPY SERVICE
7A09--BX8020 - INT 7A - IBM 3270 Workstation Program API - Multi-DOS
7A09 - INT 7A - IBM 3270 Workstation Program API - HOST SERVICES
7A13 - INT 7A - IBM 3270 Workstation Program API - GET DATA FROM A QUEUE
7A7A - INT 7A - Canon IX-30F Image Scanner SI3.SYS - INTERFACE
7A81 - INT 7A - IBM 3270 Workstation Program API - RESOLVE A GATE NAME
7A83 - INT 7A - IBM 3270 Workstation Program API - GET COMPLETION RESULTS
7AFDCB - INT 7A - IBM Personal Communications/3270 - INSTALLATION CHECK
7AFE01 - INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL SEND/RECEIVE FUNCTION
7AFE02 - INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL SEND/RECEIVE FUNCTION
7AFF01 - INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL API INITIALIZATION
7AFF02 - INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL API TERMINATION
7AFF03 - INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL API INITIALIZATION
7AFF04 - INT 7A U - IBM PC3270 EMUL PROG v3 - INTERNAL ???

INT 7A U - Topware Network Operating System - ???
	AL = ???
	???
Return: ???
SeeAlso: INT 21/AX=FF00h"Topware",INT 2F/AX=FF00h

INT 7A - X.PC Packet software interface
	ES:BX -> parameter block
SeeAlso: INT 60/AX=01FFh

INT 7A - DJGPP GO32.EXE DOS EXTENDER - RELOCATED IRQ2
Program: GO32.EXE is a DOS extender included as part of the 80386 port of the
	  GNU C/C++ compiler by DJ Delorie and distributed as DJGPP
Notes:	this vector is overwritten when GO32 starts but is not restored by
	  early versions of the extender
	the newest versions of GO32 dynamically allocate the vectors used
	  for the relocated IRQs, much as DESQview does (see INT 50"DESQview")
SeeAlso: INT 0A"IRQ2",INT 79"GO32",INT 7B"GO32"

INT 7A O - PRINDIR - API (moved to INT 7C, then INT 2F/AX=7F00h)
SeeAlso: INT 7C"PRINDIR",INT 2F/AX=7F00h"PRINDIR"

INT 7A - Novell NetWare - LOW-LEVEL API - Notes
Note:	this interrupt is used for IPX/SPX access in NetWare versions through
	  2.0a; in later versions, you should use INT 2F/AX=7A00h to get an
	  entry point even though INT 7A still exists.	For both INT 7A and
	  the FAR entry point, BX contains the function number; IPX is
	  sometimes called internally with BX bit 15 set, which causes the
	  handler to bypass some initial checks and an optional call to the
	  IPX Windows support handler set with INT 2F/AX=7AFFh/BX=0000h
	  (see #02926)
SeeAlso: INT 2F/AX=7A00h,INT 64"Novell",INT 7A/BX=0000h

INT 7A - Novell NetWare - IPX Driver - OPEN SOCKET
	BX = 0000h
	AL = socket longevity
	    00h open until close or terminate
	    FFh open until close
	DX = socket number (high byte in DL)
	    0000h dynamic allocation
	    else  socket to open (see #03809)
Return: AL = return code
	    00h success
		DX = socket number
	    FEh socket table full
	    FFh socket already open
Notes:	TSRs which need to use sockets should set AL to FFh, non-resident
	  programs should normally use AL=00h
	IPX can be configured to support up to 150 open sockets on a
	  workstation, and defaults to 20
	this function is supported by Advanced NetWare 1.02+
SeeAlso: INT 7A/BX=0001h,INT 7A/BX=0004h,INT 7A/BX=0023h

(Table 03809)
Values for IPX socket number:
 0451h	File Service (NetWare Core Protocol)
 0452h	Service Advertising Protocol (SAP) (see #03817)
 0453h	Routing Information Packet (see #03820)
 0455h	NetBIOS Packet
 0456h	diagnostics
 0457h	server serial numbers (labeled "Copy Protection" by Lanalyzer)
 2222h	NetWare Core Protocol
 4000h-7FFFh used for dynamic allocation
 4000h \ seem to be used by IPX internally
 4001h /
 4444h	Brightwork Development's SiteLock server
 5555h	Brightwork Development's SiteLock client (workstation)
 8000h-FFFFh assigned by Novell
 869Ch	ID Software's DOOM
 901Fh	Lancheck
 9023h	Server info (NetWare "Slurpee", NetWare Lite, Personal NetWare)
 9024h	Client info (NetWare "Slurpee", NetWare Lite, Personal NetWare)
 9025h	Serial socket (NetWare "Slurpee", NetWare Lite, Personal NetWare)
 9026h	Extension info (NetWare Lite, Personal NetWare???)
Notes:	SiteLock is an application metering product using IPX to communicate
	  between the application and the license server
	IPX socket numbers should be registered with the Novell Development
	  Products Division
SeeAlso: INT 7A/BX=0001h

INT 7A - Novell NetWare - IPX Driver - CLOSE SOCKET
	BX = 0001h
	DX = socket number (high byte in DL) (see #03809)
Notes:	also cancels events set by any Event Control Blocks for the socket
	the program must close all open sockets before terminating
	this function is supported by Advanced NetWare 1.02+
	When the NetWare-specific release of the DR DOS command processor does
	  a NetWare shutdown sequence on exit, it will close all user sockets
	  except for socket numbers 4000 and 4001, which seem to be used by IPX
	  internally.
SeeAlso: BX=0000h

INT 7A - Novell NetWare - IPX Driver - GET LOCAL TARGET
	BX = 0002h
	ES:SI -> target internetwork address (see #03824 at INT 7A/BX=000Bh)
	ES:DI -> 6-byte buffer for local target
Return: AL = return code
	    00h success
	       CX = expected one-way transfer time (clock ticks) for a 576-byte
		      packet
	       ES:DI -> local target
	    FAh unsuccessful (no path to destination)
Notes:	the internetwork address consists of a 4-byte network address followed
	  by a 6-byte node address.  The local target is only a 6-byte node
	  address.  If the target is in the same network, the local target is
	  just the node address of target; otherwise, the local target is the
	  node address of the bridge that leads to the target.
	this function may be called from inside IPX and AES Event Service
	  Routines, but not from other interrupt handlers
	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0009h

INT 7A - Novell NetWare - IPX Driver - SEND PACKET
	BX = 0003h
	ES:SI -> Event Control Block (see #03810,#03811)
Notes:	returns immediately; IPX attempts to send the packet in the background
	this function is supported by Advanced NetWare 1.02+
	this function is nearly identical to BX=000Fh, except that it always
	  copies the source address into the IPX header assumed to be at the
	  beginning of the first fragment
SeeAlso: BX=0004h,BX=000Fh,INT 21/AH=EEh"Novell"

Format of IPX Event Control Block:
Offset	Size	Description	(Table 03810)
 00h	DWORD	Link
 04h	DWORD	-> Event Service Routine (00000000h if none) (see #03814)
 08h	BYTE	in use flag (see #03812)
 09h	BYTE	completion code (see #03813)
 0Ah	WORD	(big-endian) socket number (see #03809)
 0Ch  4 BYTEs	IPX workspace
 10h 12 BYTEs	driver workspace
 1Ch  6 BYTEs	immediate local node address
 22h	WORD	fragment count
 24h	var	fragment descriptors
		Offset	Size	Description
		 00h	DWORD	-> fragment data
		 04h	WORD	size of fragment in bytes.
Notes:	ESR is a far procedure that is called when the ECB has been handled.
	  On call, the in use flag is zero if the ECB has been handled,
	  non-zero otherwise. If the flag is zero, the completion code holds
	  the result of the event.
	the first fragment should start with an IPX header (see #03815)
	all fragments are concatenated and sent in one piece
	node address FFh FFh FFh FFh FFh FFh broadcasts to all nodes
SeeAlso: #03811

Format of AES-ECB:
Offset	Size	Description	(Table 03811)
 00h	DWORD	Link
 04h	DWORD	ESR (Event Service Routine) address (see #03814)
 08h	BYTE	in use flag (see #03812)
 09h  5 BYTEs	AES workspace
SeeAlso: #03810

(Table 03812)
Values for ECB in use flag:
 00h	available
 E0h	AES temporary
 F6h	\ special IPX/SPX processing for v3.02+
 F7h	/
 F8h	IPX in critical section
 F9h	SPX listening
 FAh	processing
 FBh	holding
 FCh	AES waiting
 FDh	AES couting down delay time
 FEh	awaiting packet reception
 FFh	sending packet
SeeAlso: #03810,#03811,#03813

(Table 03813)
Values for ECB completion code:
 00h	success
 ECh	remote terminated connection without acknowledging packet
 EDh	abnormal connection termination
 EEh	invalid connection ID
 EFh	SPX connection table full
 F9h	event should not be cancelled
 FAh	cannot establish connection with specified destination
 FCh	cancelled
 FDh	malformed packet
 FEh	packet undeliverable
 FFh	physical error
SeeAlso: #03810,#03812

(Table 03814)
Values Event Service Routine is called with:
	AL = caller's identity (00h = AES, FFh = IPX)
	ES:SI -> event control block
	interrupts disabled
Return: all registers preserved
SeeAlso: #03810,#03815

Format of IPX header:
Offset	Size	Description	(Table 03815)
 00h	WORD	(big-endian) checksum
 02h	WORD	(big-endian) length in bytes of total packet
 04h	BYTE	transport control
 05h	BYTE	packet type (see #03816)
 06h 10 BYTEs	destination internetwork address
 10h	WORD	(big-endian) destination socket
 12h 10 BYTEs	source internetwork address
 1Ch	WORD	(big-endian) source socket
Notes:	an IPX packet has the identical format as a Xerox Network Standard
	  (XNS) packet
	the application must set packet type, destination address, and
	  destination socket; IPX/SPX set the remaining fields
SeeAlso: #03810,#03826

(Table 03816)
Values for IPX packet type:
 00h	unknown packet type
 01h	routing information packet
 02h	echo packet
 03h	error packet
 04h	packet exchange packet (always use this one for data)
 05h	SPX packet (see #03826)
 11h	NetWare Core Protocol (also used by Service Advertising Protocol)
 14h	Propagated Packet (for NetWare), NetBIOS name packet
 15h-1Eh experimental protocols
Note:	undocumented packet type 14h will cross up to 16 networks deep in
	  all directions; as Aaron Martin of Origin Systems discovered, the
	  first 64 bytes of the IPX data in such packets should be considered
	  reserved, as IPX places the traversed server nodes there.

Format of Service Advertising Protocol Service Query Packet:
Offset	Size	Description	(Table 03817)
 00h 30 BYTEs	IPX header
 1Eh	WORD	(big-endian) query type
		0001h general find service
		0003h find nearest server
 20h	WORD	(big-endian) server type
		(see #01890 at INT 21/AH=E3h"CONNECTION CONTROL")
SeeAlso: #03818

Format of Service Advertising Protocol Server Identification Packet:
Offset	Size	Description	(Table 03818)
 00h 30 BYTEs	IPX header
 1Eh	WORD	(big-endian) response type
		0002h general service
		0004h nearest service
 20h 64N BYTEs	server entries (1-7) (see #03819)
SeeAlso: #03817,#03820

Format of SAP server entry:
Offset	Size	Description	(Table 03819)
 00h	WORD	(big-endian) server type
		(see #01890 at INT 21/AH=E3h"CONNECTION CONTROL")
 02h 48 BYTEs	ASCIZ server name
 32h  2 WORDs	(big-endian) network number
 34h  3 WORDs	(big-endian) node number
 3Ch	WORD	(big-endian) socket number
 3Eh	WORD	(big-endian) number of hops between caller and server
		10h = Server Shutdown Advertising Packet
SeeAlso: #03818

Format of IPX Routing Information packet:
Offset	Size	Description	(Table 03820)
 00h 30 BYTEs	IPX header
 1Eh	WORD	operation (0001h request, 0002h response)
 20h 8N BYTEs	network entries (1-50) (see #03821)
SeeAlso: #03818

Format of RIP network entry:
Offset	Size	Description	(Table 03821)
 00h	DWORD	network number (FFFFFFFFh = general request)
 04h	WORD	(response) number of hops
 06h	WORD	(response) number of clock ticks to reach destination

INT 7A - Novell NetWare - IPX Driver - LISTEN FOR PACKET
	BX = 0004h
	ES:SI -> Event Control Block (see BX=0003h)
Return: AL = status
	    00h successful
	    FFh no listening socket for packet
Desc:	this function provides IPX with an ECB for receiving an IPX packet, but
	  does not wait for a packet to arrive
Notes:	the application must open a socket and initialize the ECB's ESR
	  address, socket number, fragment count, and fragment descriptor
	  fields before invoking this function
	there is no limit on the number of ECBs which may simultaneously be
	  listening on a socket
	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0000h,BX=0003h

INT 7A - Novell NetWare - IPX Driver - SCHEDULE IPX EVENT
	BX = 0005h
	AX = delay time in clock ticks
	ES:SI -> Event Control Block (see BX=0003h)
Note:	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0006h,BX=0007h,BX=0008h

INT 7A - Novell NetWare - IPX Driver - CANCEL EVENT
	BX = 0006h
	ES:SI -> Event Control Block (see BX=0003h)
Return: AL = return code (see #03822)
Notes:	cannot cancel packets which the node's driver has already sent
	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0005h

(Table 03822)
Values for IPX return code:
 00h	success
 F9h	event in use
 FCh	event cancelled
 FFh	unsuccessful, event not in use, or unrecognized ECB flag

INT 7A - Novell NetWare - IPX Driver - SCHEDULE SPECIAL EVENT
	BX = 0007h
	AX = delay time
	ES:SI -> Event Control Block (see BX=0003h)
Note:	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0006h

INT 7A - Novell NetWare - IPX Driver - GET INTERVAL MARKER
	BX = 0008h
Return: AX = interval marker in clock ticks (big-endian???)
Notes:	may be used to measure the time elapsed between two events, up to one
	  hour
	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0005h

INT 7A - Novell NetWare - IPX Driver - GET INTERNETWORK ADDRESS
	BX = 0009h
	ES:SI -> buffer for own internetwork address (see #03823)
Return: ES:SI buffer filled
	SI destroyed
Note:	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0002h,BX=000Bh

Format of IPX internetwork address:
Offset	Size	Description	(Table 03823)
 00h  4 BYTEs	(big-endian) network number
 04h  6 BYTEs	(big-endian) node number within network

INT 7A - Novell NetWare - IPX Driver - RELINQUISH CONTROL
	BX = 000Ah
Desc:	this call indicates that the application is idle and permits the IPX
	  driver to do some work
Note:	this function is supported by Advanced NetWare 1.02+
SeeAlso: INT 15/AX=1000h,INT 21/AH=89h,INT 2F/AX=1680h

INT 7A - Novell NetWare - IPX Driver - DISCONNECT FROM TARGET
	BX = 000Bh
	ES:SI -> internetwork address (see #03824)
Return: nothing
Notes:	this function permits the network software on the remote machine to
	  remove any virtual connection with the calling machine
	only use in point-to-point networks
	should never be called from within an Event Service Routine
	this function is supported by Advanced NetWare 1.02+
SeeAlso: BX=0002h,BX=0009h

Format of IPX internetwork address:
Offset	Size	Description	(Table 03824)
 00h  4 BYTEs	(big-endian) destination network
 04h  6 BYTEs	(big-endian) destination node
 0Ah  2 BYTEs	(big-endian) destination socket

INT 7A U - Novell NetWare - IPX Driver - internal - INITIALIZE NETWORK ADDRESS
	BX = 000Ch
	CX:DX = global network address (see INT 7A/BX=0002h)
	ES:DI -> "OSINCRITICALSECTION" flag
	DS:SI -> current mode for socket
Note:	the address cannot be changed once it has been initialized
SeeAlso: INT 7A/BX=0024h

INT 7A U - Novell NetWare - IPX Driver - internal - IPX GET PACKET SIZE
	BX = 000Dh
Return: AX = maximum packet size
	CX = retry count
SeeAlso: BX=001Ah

INT 7A U - Novell NetWare - IPX Driver - internal - TERMINATE SOCKETS
	BX = 000Eh
Return: nothing
Notes:	this function terminates all sockets opened with the current mode; this
	  may be intended for future enhancements as the socket mode never
	  changes in v2.15
	called by the NetWare shell if a program terminates

INT 7A - Novell NetWare - IPX Driver - INTERNAL - SEND PACKET
	BX = 000Fh
	ES:SI -> Event Control Block (see #03810 at BX=0003h)
		IPX header's checksum field must be set to FFFFh (see #03815)
		IPX header's total-length field must be set
Note:	nearly identical to function 0003h, but does not copy address into
	  the first fragment, and bypasses normal error checking
SeeAlso: BX=0003h

INT 7A - Novell NetWare - SPX Driver - INSTALLATION CHECK
	BX = 0010h
	AL = 00h
Return: AL = status
	    00h if SPX not installed
	    F0h if IPX not installed
	    FFh if SPX loaded
		BH = SPX major version
		BL = SPX minor version
		CX = maximum SPX connections
		DX = SPX connections available
Notes:	this function is supported by Advanced NetWare 2.1+
	this interrupt is used for IPX/SPX access in NetWare versions through
	  2.0a; in later versions, you should use INT 2F/AX=7A00h to get an
	  entry point even though INT 7A still exists.	For both INT 7A and
	  the FAR entry point, BX contains the function number
	IPX is sometimes called internally with BX bit 15 set, which causes the
	  entry point handler to bypass some checks and an optional call to
	  the IPX Windows support handler set with INT 2F/AX=7AFFh/BX=0000h
	  (see #02926)
SeeAlso: BX=0015h

INT 7A - Novell NetWare - SPX Driver - ESTABLISH SPX CONNECTION
	BX = 0011h
	AL = retry count
	AH = watchdog flag
	ES:SI -> Event Control Block (see #03810 at BX=0003h)
Return: AL = status (00h,EFh,FDh,FFh) (see #03825)
	DX = assigned connection ID number
Desc:	attempt to establish a connection with a listening socket
Notes:	there should always be at least two SPX ECB's listening to a socket, so
	  that NetWare can perform its internal packet exchanges
	the first fragment should start with a SPX header (see #03826).	Fill
	  in all destination addresses.
	this function is supported by Advanced NetWare 2.1+
SeeAlso: BX=0000h,BX=0012h,BX=0013h,BX=0014h,BX=0015h

(Table 03825)
Values for SPX function status:
 00h	attempting to contact destination socket
 EEh	no such connection
 EFh	local connection table full
 FDh	buffer size not 42 or fragment count not 1
 FFh	sending socket not open

Format of SPX header:
Offset	Size	Description	(Table 03826)
 00h	WORD	(big-endian) checksum
 02h	WORD	(big-endian) length in bytes of total packet
 04h	BYTE	transport control
 05h	BYTE	packet type (see #03816 at INT 7A/BX=0003h)
 06h 10 BYTEs	destination internet address
 10h	WORD	(big-endian) destination socket
 12h 10 BYTEs	source internet address
 1Ch	WORD	(big-endian) source socket
 1Eh	BYTE	connection control (see #03827)
 1Fh	BYTE	datastream type
		FEh terminate connection request packet
		FFh terminate connection acknowledgement packet
		other user-defined, ignored by SPX
 20h	WORD	(big-endian) source connection ID
 22h	WORD	(big-endian) destination connection ID
 24h	WORD	(big-endian) sequence number
 26h	WORD	(big-endian) acknowledge number
 28h	WORD	(big-endian) allocation number
SeeAlso: #03815

Bitfields for SPX connection control:
Bit(s)	Description	(Table 03827)
 3-0	unused???
 4	end of message
 5	reserved
 6	acknowledgement required
 7	system packet

INT 7A - Novell NetWare - SPX Driver - LISTEN FOR SPX CONNECTION
	BX = 0012h
	AH = watchdog flag (00h disabled, 01h enabled)
	AL = retry count (00h = default)
	ES:SI -> Event Control Block (see #03810 at BX=0003h)
Return: nothing
Notes:	there should always be at least two SPX ECB's listening to a socket, so
	  that NetWare can perform its internal packet exchanges
	this function is supported by Advanced NetWare 2.1+
SeeAlso: BX=0011h,BX=0013h,BX=0014h

INT 7A - Novell NetWare - SPX Driver - TERMINATE SPX CONNECTION
	BX = 0013h
	DX = connection ID to terminate
	ES:SI -> Event Control Block (see #03810 at BX=0003h)
Note:	this function is supported by Advanced NetWare 2.1+
SeeAlso: BX=0011h,BX=0012h,BX=0014h

INT 7A - Novell NetWare - SPX Driver - ABORT SPX CONNECTION
	BX = 0014h
	DX = connection ID to terminate
Return: nothing
Notes:	this function is supported by Advanced NetWare 2.1+
	this function does not tell the other side that the connection has been
	  terminated
	also aborts any outstanding Establish Connection, Terminate Connection,
	  and Send Sequenced Packet commands
SeeAlso: BX=0011h,BX=0013h

INT 7A - Novell NetWare - SPX Driver - GET SPX CONNECTION STATUS
	BX = 0015h
	DX = connection ID
	ES:SI -> status buffer (see #03828)
Return: AL = return code (00h,EEh) (see also #03825)
	    00h connection still valid
		ES:SI -> status buffer filled
Note:	this function is supported by Advanced NetWare 2.1+
SeeAlso: BX=0010h,BX=0011h

Format of SPX status buffer:
Offset	Size	Description	(Table 03828)
 00h	BYTE	connection state
		01h waiting to establish connection
		02h starting (attempting to create connection)
		03h connection established
		04h terminating
 01h	BYTE	watchdog flag
		bit 0: used internally by SPX
		bit 1: SPX watchdog is monitoring connection
		bits 2-7 used internally by SPX
 02h	WORD	(big-endian) source connection ID
 04h	WORD	(big-endian) destination connection ID
 06h	WORD	(big-endian) sequence number of next packet sent
 08h	WORD	(big-endian) acknowledge number, expected sequence number of
		  next received packet
 0Ah	WORD	(big-endian) maximum sequence number remote SPX may send
		  without ACK from local SPX
 0Ch	WORD	(big-endian) remote acknowledge number, next sequence number
		  remote SPX expects to receive
 0Eh	WORD	(big-endian) remote allocation number, maximum sequence number
		  local SPX may send
 10h	WORD	(big-endian) connection socket
 12h  6 BYTEs	immediate node address--bridge on local network to destination
 18h 10 BYTEs	destination internetwork address (see #03824 at INT 7A/BX=000Bh)
 22h	WORD	(big-endian) retransmit count
 24h	WORD	(big-endian) estimated roundtrip delay
 26h	WORD	(big-endian) retransmitted packets
 28h	WORD	(big-endian) suppressed packets
 2Ah 12 BYTEs	??? (v2.15)

INT 7A - Novell NetWare - SPX Driver - SEND SPX PACKET
	BX = 0016h
	DX = connection ID
	ES:SI -> Event Control Block (see BX=0003h)
Notes:	this function is supported by Advanced NetWare 2.1+
	CX may need to be 0001h ???
SeeAlso: BX=0011h,BX=0017h

INT 7A - Novell NetWare - SPX Driver - LISTEN FOR SPX PACKET
	BX = 0017h
	DX = connection ID (unused in v2.15)
	ES:SI -> Event Control Block (see BX=0003h)
Notes:	this function is supported by Advanced NetWare 2.1+
	CX may need to be 0001h ???
SeeAlso: BX=0011h,BX=0016h

INT 7A U - Novell NetWare - IPX Driver - internal - ADD DIAGNOSTIC ELEMENT
	BX = 0018h
	ES:SI -> diagnostic element (see #03829) to be added to Diagnostic Queue
Note:	this function is supported on file servers only under v2.15; v3.02 also
	  supports it on workstations
SeeAlso: BX=0019h

Format of IPX diagnostic element:
Offset	Size	Description	(Table 03829)
 00h	DWORD	pointer to next diagnostic element
 04h	DWORD	pointer to function for ???
 08h	DWORD	pointer to function for ???

INT 7A U - Novell NetWare - IPX Driver - internal - CANCEL DIAGNOSTIC ELEMENT
	BX = 0019h
	ES:SI -> diagnostic element (see BX=0018h) to be removed
Note:	this function is supported on file servers only under v2.15; v3.02 also
	  supports it on workstations
SeeAlso: BX=0018h

INT 7A - Novell NetWare - IPX Driver - GET DRIVER MAXIMUM PACKET SIZE
	BX = 001Ah
Return: AX = maximum packet size with preamble (at least 576 bytes)
	CX = IPX retry count
	DS,FLAGS preserved
SeeAlso: BX=000Dh

INT 7A U - Novell NetWare - IPX Driver - INTERNAL
	BX = 001Bh
	???
Return: ???
Notes:	this function is supported on file servers only under v2.15; v3.02 also
	  supports it on workstations
	used by NetWare Access Server, which may call INT 15/AX=1117h with
	  BX=0000h in some cases (it uses a modified DESQview)

INT 7A U - Novell NetWare - NetWare Access Server - GET ???
	BX = 001Ch
Return: AX = length of ???
	ES:BX -> ???
Notes:	these functions are NOPs for standard IPX drivers such as IPXODI v2.12
SeeAlso: INT 2F/AX=7AF1h,INT 7A/BX=001Dh,INT 7A/BX=001Eh

INT 7A U - Novell NetWare - NetWare Access Server - GET ??? ECB AND SOCKET
	BX = 001Dh
Return: DX = socket number chosen by IPX
	ES:SI -> ECB in IPX's code segment (will be listening)
	BX corrupted
Notes:	these functions are NOPs for standard IPX drivers such as IPXODI v2.12
SeeAlso: INT 2F/AX=7AF1h,INT 7A/BX=001Ch,INT 7A/BX=001Eh

INT 7A U - Novell NetWare - NetWare Access Server - GET ??? ECB
	BX = 001Eh
Return: ES:SI -> ECB
	BX corrupted
Notes:	these functions are NOPs for standard IPX drivers such as IPXODI v2.12
SeeAlso: INT 2F/AX=7AF1h,INT 7A/BX=001Ch,INT 7A/BX=001Dh

INT 7A - Novell NetWare - IPXODI v2.12+ - GET IPX INFORMATION
	BX = 001Fh
	DX = 0000h
Return: AX = ???
	BX:CX -> ??? entry point (see #03830) (undocumented)
	DX = feature flags
	    bit 0: IPXODI rather than dedicated IPX
	    bit 1: checksumming functions 0020h-0022h supported
	ES:SI -> array of words containing used socket number (undocumented);
		0000h ends array
	all other registers except DS and FLAGS may be destroyed
Note:	IPXODI v2.12 is distributed as part of the Personal NetWare system
	  bundled with Novell DOS 7
SeeAlso: BX=0020h,INT 2F/AX=7A2Fh

(Table 03830)
Call IPXODI entry point with:
	ES:SI -> ECB??? (offset 24h is far pointer to ??? data)

INT 7A - Novell NetWare - IPXODI v2.12+ - SEND WITH CHECKSUM
	BX = 0020h
	ES:SI -> ECB (see #03810 at INT 7A/BX=0003h)
Return: DS,FLAGS preserved
	BX,BP corrupted (documented as potentially destroying all other regs)
Desc:	generate a checksum for the packet data and store it in the IPX
	  checksum field before transmitting the packet
SeeAlso: BX=001Fh,BX=0021h,BX=0022h,INT 2F/AX=7A2Fh

INT 7A - Novell NetWare - IPXODI v2.12+ - IPX GENERATE CHECKSUM
	BX = 0021h
	ES:SI -> ECB data (see #03810 at INT 7A/BX=0003h)
Return: ES,DS,SI preserved
	BX,BP corrupted, all other registers potentially destroyed
Notes:	the checksum and TransportControl fields of the IPX packet are updated
	this function enables interrupts and is fully reentrant
SeeAlso: BX=001Fh,BX=0020h,BX=0022h,INT 2F/AX=7A2Fh

INT 7A - Novell NetWare - IPXODI v2.12+ - IPX VERIFY CHECKSUM
	BX = 0022h
	ES:SI -> ECB data (see #03810 at INT 7A/BX=0003h)
Return: AX = status (0000h checksum matches)
	DS,ES,SI preserved
	BX,BP corrupted, all other registers potentially destroyed
Note:	this function enables interrupts and is fully reentrant
SeeAlso: BX=001Fh,BX=0020h,BX=0021h,INT 2F/AX=7A2Fh

INT 7A - Novell NetWare - IPXODI v2.12+ - OPEN LOOK-AHEAD SOCKET
	BX = 0023h
	DX = socket number (0000h for dynamic allocation)
	ES:SI -> Look Ahead handler (see #03831)
	BP = desired lookahead size (0000h-0080h)
Return: AL = status
	    00h successful
		DX = assigned socket number (big-endian)
	    FEh maximum number of sockets already open
	    FFh specific socket already opened by another application
	DS,FLAGS preserved
	all other registers may be destroyed
Notes:	the socket will always be long-lived, and must thus be explicitly
	  closed with INT 7A/BX=0001h before the Look Ahead handler code is
	  removed from memory (i.e. the program terminates)
	this function is only supported if INT 2F/AX=7A00h returns ES:BX
	  pointing at an IPX version greater than 3.30
	the desired lookahead size is the smallest-size packet (including IPX
	  header) that should be passed to the lookahead handler when it
	  arrives
SeeAlso: INT 7A/BX=0000h,INT 7A/BX=0001h

(Table 03831)
Call IPX Look-Ahead handler with:
	AX = packet's destination socket
	DS:SI -> look-ahead structure (see #03010 at INT 2F/AX=C000h"LSL")
	DF clear
	interrupt disabled (must remain disabled)
Return: AX = packet use
	    0000h application want packet
		ES:SI -> ODI ECB (see #03011 at INT 2F/AX=C000h"LSL")
	    8001h application does not want packet
	ZF set if AX=0000h
	DS,DI,BP,SS,SP preserved
	interrupts disabled

INT 7A U - Novell NetWare - IPXODI v2.20+ - SET INTERNETWORK ADDRESS
	BX = 0024h
	ES:SI -> buffer containing internetwork address (see #03824)
Return: BX,CX,SI,DI,ES destroyed
Note:	this function differs from INT 7A/BX=000Ch in that it unconditionally
	  sets the address
SeeAlso: INT 7A/BX=000Ch

INT 7A R - AutoCAD Device Interface - DISPLAY - INITIALIZE (INIT1)
	AX = 0001h
	BX = configuration
	CX = interface level (0001h)
Return: AX = status
	    0000h initialization failed
	    0001h pre-v4.0 driver initialized successfully
	    0003h post-v3.1 driver initialized successfully (driver truncates
		  excessivly long packets)
	BX = width of graphics area in pixels, or 0000h if using packet
		  communication
	DX:CX -> packet-mode entry point (see #03832)
SeeAlso: AX=0001h,AX=0200h,AX=07D0h,INT 61/AX=0007h"OPTIMA",INT 78"AutoCAD"
SeeAlso: INT 79/AX=0001h,INT 7B/AX=8001h"AutoCAD",INT 7C"AutoShade"

(Table 03832)
Call packet-mode entry point with:
STACK:	DWORD	pointer to request packet (see #03833)
	WORD	length of packet

Format of request packet:
Offset	Size	Description	(Table 03833)
 00h	WORD	function number (00h-45h for Compaq VGADI41.EXE)

INT 7A R - AutoCAD Device Interface - RENDERING DEVICE - INITIALIZE (RDLINKUP)
	AX = 0200h
	BX = 0000h
	CX = interface level (0001h)
Return: BX = 0000h (driver uses packet communication)
	DX:CX -> packet-mode entry point (see #03832)
SeeAlso: AX=0001h"AutoCAD",INT 79/AX=0001h,INT 7B/AX=8001h"AutoCAD"

INT 7A - IBM 3270 Workstation Program API - CREATE A QUEUE
	AH = 04h
	???
Return: ???
SeeAlso: AH=06h

INT 7A - IBM 3270 Workstation Program API - DELETE A QUEUE
	AH = 06h
	???
Return: ???
SeeAlso: AH=04h

INT 7A R - AutoCAD Device Interface - Compaq VGADI41.EXE - GET ENTRY POINT
	AX = 07D0h
Return: AX = ??? (0003h)
	BX = 0000h
	DX:CX -> ADI entry point (see AX=0001h)
SeeAlso: AX=0001h

INT 7A - IBM 3270 Workstation Program API - SESSION SERVICES
	AH = 09h
	BX = 8020h (synchronous request)
	CX = 0000h
	DX = ID of session manager (SESSMGR)
	AL = service (see #03834)
	ES:DI -> control block
Return: ???

(Table 03834)
Values for service:
 01h	get session ID
 02h	get session info
 04h	dettach from session
 05h	attach to session
 06h	get list of windows available
 07h	get environment of window
 08h	get 'PIF' (program information file) info
 0Ah	get base window ID
 0Bh	get cursor info

INT 7A - IBM 3270 Workstation Program API - KEYBOARD SERVICES
	AH = 09h
	BX = 8020h (synchronous request)
	CX = 0000h
	DX = ID of keyboard manager
	AL = service number (see #03835)
	ES:DI -> control block
Return: ???

(Table 03835)
Values for 3270 Workstation Program keyboard service:
 01h	connect to keyboard
 02h	disconnect from keyboard
 03h	read from keyboard
 04h	send keystroke to session
 05h	disable input
 06h	enable input
 07h	update status code

INT 7A - IBM 3270 Workstation Program API - WINDOW SERVICES
	AH = 09h
	BX = 8020h (synchronous request)
	CX = 00FFh
	DX = ID of window service controller (WSCTRL)
	AL = service number (see #03836)
	ES:DI -> control block
Return: ???

(Table 03836)
Values for 3270 Workstation Program window service:
 01h	connect to WS control
 02h	disconnect from WS control
 03h	add a window
 04h	change window's position on screen
 05h	change window's size
 06h	change window's color
 07h	change window's position in the presentation space
 08h	hide/unhide toggle
 09h	enlarge/reduce toggle
 0Ah	change screen background color
 0Bh	get window's position on screen
 0Ch	get window's size
 0Dh	get window's color
 0Eh	get window's position in the presentation space
 0Fh	determine whether hidden
 10h	determine whether enlarged
 11h	get background color
 12h	get window names
 13h	delete all windows from profile
 14h	pick active window
 15h	redraw screen
 16h	redraw window
 17h	delete a window from profile
 18h	get active window
 19h	get active screen
 1Ah	get window data
 1Bh	change window data
 1Ch	select active screen

INT 7A - IBM 3270 Workstation Program API - PRESENTATION SPACE SERVICES
	AH = 09h
	BX = 8020h
	CX = 00FFh
	DX = ID of PCPSM
	AL = service
	    01h define presentation space
	    02h delete presentation space
	    03h display presentation space
	    04h position cursor in presentation space
	    05h change default presentation space
	ES:DI -> control block
Return: ???

INT 7A - IBM 3270 Workstation Program API - 3270 EMULATION
	AH = 09h
	BX = 8020h
	CX = 00FFh
	DX = ID of 3270EML
	AL = service
	    01h connect
	    02h disconnect
	ES:DI -> control block
Return: ???

INT 7A - IBM 3270 Workstation Program API - OPERATOR INFORMATION AREA
	AH = 09h
	BX = 8020h
	CX = 00FFh
	DX = ID of OIAM
	AL = service
	    01h read Operator Information Area
	    02h read OIA subset
	ES:DI -> control block
Return: ???
Note: the OIA is the 25th line on the Host session

INT 7A - IBM 3270 Workstation Program API - TRANSLATE DATA
	AH = 09h
	BX = 8020h
	CX = 00FFh
	DX = ID of XLATE
	AL = service
	    01h translate from host characters to ASCII and vice versa
		(determined by control block byte 11)
	ES:DI -> control block
Return: ???

INT 7A - IBM 3270 Workstation Program API - COPY SERVICE
	AH = 09h
	BX = 8020h
	CX = 00FFh
	DX = ID of copy service
	AL = service
	    01h copy string from one presentation space to another
	    02h copy block from one presentation space to another
	    03h connect to PC session for copy
	    04h disconnect PC session from copy
	ES:DI -> control block
Return: ???

INT 7A - IBM 3270 Workstation Program API - Multi-DOS
	AH = 09h
	BX = 8020h
	CX = 00FFh
	ES:DI -> control block
	DX = ID of INDJQRY
		get environment size
	   = ID of INDJASY
		request DOS functions from workstation
	   = ID of MEMORY
		AL = function
		    01h allocate memory
		    02h deallocate memory
		    03h modify allocated size
Return: ???

INT 7A - IBM 3270 Workstation Program API - HOST SERVICES
	AH = 09h
	BX = request type (4000h async, 8028h synchronous)
	CX = 0000h
	DX = ID of MFIC
	AL = service (see #03837)
	ES:DI -> control block

(Table 03837)
Values for 3270 Workstation Program host service:
 01h	connect to host
 02h	disconnect from host
 03h	read DFT structured data from host
 04h	write DFT structured data to host
 05h	create a host buffer

INT 7A - IBM 3270 Workstation Program API - GET DATA FROM A QUEUE
	AH = 13h
	???
Return: ???

INT 7A - Canon IX-30F Image Scanner SI3.SYS - INTERFACE
	AH = 7Ah
	???
Return: AX = status
	    0000h success
	    000Eh undefined function code
Range:	unknown, selected by device driver commandline arguments

INT 7A - IBM 3270 Workstation Program API - RESOLVE A GATE NAME
	AH = 81h
	ES:DI -> 8-char blank-padded gate name (see #03838)
Return: DX = gate ID

(Table 03838)
Values for 3270 Workstation Program gate name:
 "SESSMGR "
 "KEYBOARD"
 "WSCTRL  "
 "MFIC	  "
 "PCPSM	  "
 "3270EML "
 "COPY	  "
 "XLATE	  "
 "OIAM	  "
 "MEMORY  "
 "INDJQRY "
 "INDJASY "

INT 7A - IBM 3270 Workstation Program API - GET COMPLETION RESULTS
	AH = 83h
	???
Return: ???

INT 7A - IBM Personal Communications/3270 - INSTALLATION CHECK
	AX = FDCBh
Return: DX:AX -> PCS/3270 signature block if loaded (see #03839)

Format of Personal Communications/3270 signature block:
Offset	Size	Description	(Table 03839)
 04h	WORD	PCS/3270 signature (5741h)
 06h	WORD	version (0501h = PCS/3270 v1.0)

INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL SEND/RECEIVE FUNCTION
	AX = FE01h
	???
Return: ???
SeeAlso: AX=FE02h

INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL SEND/RECEIVE FUNCTION
	AX = FE02h
	???
Return: ???
SeeAlso: AX=FE01h

INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL API INITIALIZATION
	AX = FF01h
	ES:DI -> API function handler routine
Return: CX = 1200h
SeeAlso: AX=FF02h,AX=FF03h

INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL API TERMINATION
	AX = FF02h
Return: CX = 1200h
SeeAlso: AX=FF01h

INT 7A - IBM PC3270 EMUL PROG v3 - INTERNAL API INITIALIZATION
	AX = FF03h
	ES:DI -> send/receive function handler routine
Return: CX = 1200h
SeeAlso: AX=FF01h

INT 7A U - IBM PC3270 EMUL PROG v3 - INTERNAL ???
	AX = FF04h
	ES:DI -> ???
Return: CX = 1200h