Int 14 Fn 04 - Connection Manager - Open Communication [N]
AH = 04h
DX = FFFFh
ES:DI -> Connection Request protocol vector (see #0237)
Return: AH = return code
00h successful
AL = connection ID
BH = connection type
00h direct connection or no dialing
01h Connection Server dialed phone
01h no response from Connection Server
03h invalid request
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
Desc: initiate a connection to the Connection Server listed in the current
Client parameter set
Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
function, but redirects the port over the network; if DX is any other
value, the call is chained
all subvectors of the Connection Request vector are optional; if
missing, default values are provided by the default connection
parameter set
See Also: AH=00h/DX=FFFFh,AH=05h/DX=FFFFh,AH=06h/DX=FFFFh,AH=07h/DX=FFFFh
See Also: AH=0Ah/DX=FFFFh,AH=0Ch/DX=FFFFh
Format of Connection Manager protocol command vector:
Offset Size Description (Table 0237)
00h WORD (big-endian) total length of command (including this word)
02h WORD (big-endian) command code
EF01h Connection Request
EF06h Modify Connection Parameters
04h N BYTEs list of subvectors (see #0239)
allowable subvector types are 01h-04h,17h,18h for command code
EF01h; 03h,04h for command code EF06h (see #0238)
(Table 0238)
Values for Connection Manager subvector type code:
01h Connection ID
02h Destination ID
03h Asynchronous line parameters
04h Data transfer parameters
09h Line speed
0Ah Serial coding
0Bh Packet size
0Ch Timers
0Dh Special characters
0Eh Target ID
0Fh Telephone number
10h ASCII destination ID
11h Parity
12h Bits per character
13h Number of stop bits
14h Packet timer
15h Intercharacter timer
17h Flags
18h Parameter ranges
19h Flow control
Format of Connection Manager subvector:
Offset Size Description (Table 0239)
00h BYTE length of subvector
01h BYTE type code (see #0238)
02h N-2 BYTEs data, which may include subvectors
See Also: #0240,#0241,#0242,#0243,#0244,#0245,#0246,#0247,#0248,#0249,#0250
See Also: #0251,#0252,#0254,#0255,#0256,#0257,#0258,#0259,#0237
Format of Connection ID subvector:
Offset Size Description (Table 0240)
00h BYTE 03h (length)
01h BYTE 01h (subvector "Connection ID")
02h BYTE connection ID
See Also: #0239
Format of Destination ID subvector:
Offset Size Description (Table 0241)
00h BYTE length
01h BYTE 02h (subvector "Destination ID")
02h N BYTEs subvector(s) of type 0Eh, 0Fh, or 10h
See Also: #0239
Format of Asynchronous line parameters subvector:
Offset Size Description (Table 0242)
00h BYTE length
01h BYTE 03h (subvector "Asynchronous line parameters")
02h N BYTEs subvector(s) of type 09h, 0Ah, or 19h
See Also: #0239
Format of Data transfer parameters subvector:
Offset Size Description (Table 0243)
00h BYTE length
01h BYTE 04h (subvector "Data transfer parameters")
02h N BYTEs subvector(s) of type 0Bh, 0Ch, or 0Dh
See Also: #0239
Format of Line speed subvector:
Offset Size Description (Table 0244)
00h BYTE 04h (length)
01h BYTE 09h (subvector "Line speed")
02h WORD bit map, highest set bit selects speed
bit 0: 2400
bits 1-7: 1800, 1200, 600, 300, 115200, 150, 110 bps
bits 8-15: 57600, 38400, 19200, 14400, 9600, 7200, 4800, 3600
See Also: #0239
Format of Serial coding subvector:
Offset Size Description (Table 0245)
00h BYTE length
01h BYTE 0Ah (subvector "Serial coding")
02h N BYTEs subvector(s) of type 11h, 12h, or 13h
See Also: #0239
Format of Packet size subvector:
Offset Size Description (Table 0246)
00h BYTE 04h (length)
01h BYTE 0Bh (subvector "Packet size")
02h WORD (big-endian) packet size, 1 to 1024
See Also: #0239
Format of Timers subvector:
Offset Size Description (Table 0247)
00h BYTE length
01h BYTE 0Ch (subvector "Timers")
02h 8 BYTEs subvector of type 14h or 15h
See Also: #0239
Format of Special characters subvector:
Offset Size Description (Table 0248)
00h BYTE length
01h BYTE 0Dh (subvector "Special characters")
02h N BYTEs list of ASCII characters to be used as EOM or EOB
See Also: #0239
Format of Target ID:
Offset Size Description (Table 0249)
00h BYTE length
01h BYTE 0Eh (subvector "Target ID")
02h N BYTEs target ID, 1-16 bytes
See Also: #0239
Format of Telephone number subvector:
Offset Size Description (Table 0250)
00h BYTE length
01h BYTE 0Fh (subvector "Telephone number")
02h N BYTEs telephone number
See Also: #0239
Format of ASCII destination ID subvector:
Offset Size Description (Table 0251)
00h BYTE length
01h BYTE 10h (subvector "ASCII destination ID")
02h N BYTEs destination ID
See Also: #0239
Format of Parity subvector:
Offset Size Description (Table 0252)
00h BYTE 03h (length)
01h BYTE 11h (subvector "Parity")
02h BYTE parity type (see #0253)
See Also: #0239
Bitfields for Connection Manager parity type:
Bit(s) Description (Table 0253)
7 odd
6 even
5 mark
4 space
3 none
See Also: #0252
Format of Bits per character subvector:
Offset Size Description (Table 0254)
00h BYTE 03h (length)
01h BYTE 12h (subvector "Bits per character")
02h BYTE bits per character
bit 7: seven
bit 6: eight
See Also: #0239
Format of Number of stop bits subvector:
Offset Size Description (Table 0255)
00h BYTE 03h (length)
01h BYTE 13h (subvector "Number of stop bits")
02h BYTE stop bits
bit 7: one
bit 6: 1.5
bit 5: two
See Also: #0239
Format of Packet timer and Intercharacter timer subvectors:
Offset Size Description (Table 0256)
00h BYTE 04h (length)
01h BYTE subvector type
14h Packet timer
15h Intercharacter timer
02h WORD (big-endian) unit of value representing 20ms
See Also: #0239
Format of Flags subvector:
Offset Size Description (Table 0257)
00h BYTE 03h (length)
01h BYTE 17h (subvector "Flags")
02h BYTE flags
bit 7: queueing requested
See Also: #0239
Format of Parameter ranges subvector:
Offset Size Description (Table 0258)
00h BYTE length
01h BYTE 18h (subvector "Parameter ranges")
02h N BYTEs subvector(s) of type 09h, 11h, 12h, or 13h
See Also: #0239
Format of Flow control subvector:
Offset Size Description (Table 0259)
00h BYTE length (02h-04h)
01h BYTE 19h (subvector "Flow control")
02h BYTE XOFF character
03h BYTE XON character
Note: if length is 02h, flow control is disabled; if length is 03h, any
character will be accepted as XON after an XOFF
See Also: #0239