INT 68 - APPC/PCIBM PC - TRANSACTION PROCESSING AH = 04h DS:DX -> control block (see #03702) Return: control block updated Format of APPC/PCIBM PC control block: Offset Size Description (Table 03702) 00h 12 BYTEs reserved 0Ch WORD verb (action) 2500h TP_ENDED 2900h TP_VALID 0Eh 6 BYTEs 00h 14h DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. (big-endian) return code (see #03668) 18h WORD 00h 1Ah 8 BYTEs (big-endian) TP_ID 22h DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. -> CREATE_TP record (only if verb = 2900h)