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ATALK.SYS - AppleTalk INTERFACE

DX:BX -> control block (see #03256)

Return:
None
InstallCheck:
Test for the signature "AppleTalk" 16 bytes prior to the
interrupt handler
Range:
INT 5Ch to INT 70h
Index:
Installation check;ATALK.SYS|installation check;AppleTalk interface


(Table 03255)
Values for ATALK.SYS command code:
01h    "AT_INIT"           initialize the driver
02h    "AT_KILL"
03h    "AT_GETNETINFO" get current network info incl init status
04h    "AT_GETCLOCKTICKS"
05h    "AT_STARTTIMER"
06h    "AT_RESETTIMER"
07h    "AT_CANCELTIMER"
10h    "LAP_INSTALL"
11h    "LAP_REMOVE"
12h    "LAP_WRITE"
13h    "LAP_READ"
14h    "LAP_CANCEL"
20h    "DDP_OPENSOCKET"
21h    "DDP_CLOSESOCKET"
22h    "DDP_WRITE"
23h    "DDP_READ"
24h    "DDP_CANCEL"
30h    "NBP_REGISTER"
31h    "NBP_REMOVE"
32h    "NBP_LOOKUP"
33h    "NBP_CONFIRM"
34h    "NBP_CANCEL"
35h    "ZIP_GETZONELIST"
36h    "ZIP_GETMYZONE"
37h    "ZIP_TAKEDOWN"
38h    "ZIP_BRINGUP"
40h    "ATP_OPENSOCKET"
41h    "ATP_CLOSESOCKET"
42h    "ATP_SENDREQUEST"
43h    "ATP_GETREQUEST"
44h    "ATP_SENDRESPONSE"
45h    "ATP_ADDRESPONSE"
46h    "ATP_CANCELTRANS"
47h    "ATP_CANCELRESPONSE"
48h    "ATP_CANCELREQUEST"
50h    "ASP_GETPARMS"
51h    "ASP_CLOSESESSION"
52h    "ASP_CANCEL"
53h    "ASP_INIT"
54h    "ASP_KILL"
55h    "ASP_GETSESSION"
56h    "ASP_GETREQUEST"
57h    "ASP_CMDREPLY"
58h    "ASP_WRTCONTINUE"
59h    "ASP_WRTREPLY"
5Ah    "ASP_CLOSEREPLY"
5Bh    "ASP_NEWSTATUS"
5Ch    "ASP_ATTENTION"
5Dh    "ASP_GETSTATUS"
5Eh    "ASP_OPENSESSION"
5Fh    "ASP_COMMAND"
60h    "ASP_WRITE"
61h    "ASP_GETATTENTION"
70h    "PAP_OPEN"
71h    "PAP_CLOSE"
72h    "PAP_READ"
73h    "PAP_WRITE"
74h    "PAP_STATUS"
75h    "PAP_REGNAME"
76h    "PAP_REMNAME"
77h    "PAP_INIT"
78h    "PAP_NEWSTATUS"
79h    "PAP_GETNEXTJOB"
7Ah    "PAP_KILL"
7Bh    "PAP_CANCEL"

Format of AppleTalk control block:

Offset  Size    Description     (Table 03256)
00h    WORD    command code (see #03255)
OR with the following flags
8000h start command then return
4000h wait for interrupt service to complete
02h    WORD    returned status
0000h success (already initialized if func 01h)
04h    DWORD   pointer to completion function
08h    WORD    network number
0Ah    BYTE    node ID
---if general func (01h,03h), control block continues:
0Bh    BYTE    "inf_abridge"
0Ch    WORD    "inf_config"
0Eh    DWORD   pointer to buffer
12h    WORD    buffer size
---if DDP function (20h-24h), control block continues:
0Bh    BYTE    "ddp_addr_socket"
0Ch    BYTE    "ddp_socket"
0Dh    BYTE    "ddp_type"
0Eh    DWORD   pointer to buffer
12h    WORD    buffer size
14h    BYTE    "ddp_chksum"
---if Name Binding Protocol (30h-34h), control block continues:
0Bh    BYTE    "nbp_addr_socket"
0Ch    WORD    "nbp_toget"
0Eh    DWORD   pointer to buffer (see #03257)
12h    WORD    buffer size
14h    BYTE    "nbp_interval"
15h    BYTE    "nbp_retry"
16h    DWORD   "nbp_entptr"
---if AppleTalk Transaction Protocol (42h), control block continues:
0Bh    BYTE    "atp_addr_socket"
0Ch    WORD    "atp_socket"
0Eh    DWORD   pointer to buffer
12h    WORD    buffer size
14h    BYTE    "atp_interval"
15h    BYTE    "atp_retry"
16h    BYTE    ATP flags
bit 5:
Exactly one transaction
17h    BYTE    "atp_seqbit"
18h    BYTE    transaction ID
19h  4 BYTEs   ATP user bytes
1Dh    BYTE    number of BDS buffers
1Eh    BYTE    number of BDS responses
1Fh    DWORD   pointer to BDS buffers (see #03258)

Format of Name Binding Protocol Name-to-Address binding entries for NBP_LOOKUP:

Offset  Size    Description     (Table 03257)
00h    WORD    "tup_address_network"
02h    BYTE    "tup_address_notid"
03h    BYTE    "tup_address_socket"
04h    BYTE    "tup_enum"
05h 99 BYTEs   name

Format of BDS entries:

Offset  Size    Description     (Table 03258)
00h    DWORD   pointer to buffer
04h    WORD    size of buffer
06h    WORD    BDS data size
08h  4 BYTEs   "bds_userbytes"

Category: Network - Int 5Ch - A

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