Int 68/AH=02h/SF=1200h

APPC/PC - CONNECTION CONTROL - TEST

AH = 02h subfn 1200h
DS:DX -> control block (see #03697)

Return:
Control block updated

See Also: AH=02h/SF=1300h


Format of APPC/PC "Test" control block:

Offset  Size    Description     (Table 03697)
00h 12 BYTEs   reserved
0Ch    WORD    1200h (verb "Test" or "MC_Test")
0Eh    BYTE    1 if MC_ (mapped conversation) form of verb
0 if basic verb
0Fh  5 BYTEs   reserved (0)
14h    WORD    (big-endian) primary return code (see #03681)
16h    DWORD   (big-endian) error code (see #03682)
1Ah  8 BYTEs   (big-endian) TP_ID
22h    DWORD   (big-endian) conversation ID
26h    BYTE    (MC_Test only) test (0=posted, 1=request_to_send received)

Note: Error code has different interpretations for:. 0 posted data. 1 posted not data (primary return code = 0). 1 bad TP_ID (primary return code = 1)

Category: Network - Int 68h - A

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