Programming Considerations

If you modify or create an internal transmission algorithm in DMTAXA, you should consider these differences:

• The parameter lists for the open, accept and select requests do not include a pointer to the CVT. The parameter lists begin at word 2 of the parameter lists described in Open Request Processing, Accept Request Processing, and Select Request Processing.
• Internal transmission algorithms cannot support 32 streams for GATEWAY-type links.
• The stream masks returned by the accept and select requests in register 1 differ from those specified by external transmission algorithms. The following stream identifiers are applicable only to internal transmission algorithms:

  Bit Value	Stream
  X'00000080'	Stream 1
  X'00000040'	Stream 2
  X'00000020'	Stream 3
  X'00000010'	Stream 4
  X'00000008'	Stream 5
  X'00000004'	Stream 6
  X'00000002'	Stream 7