Data Link Processors

Data Link Processors are modules used to interface to Peripheral devices using the Message Level Interface (MLI).

Four types of operational messages are passed from the IOT through the distribution card to the DLP:

Operation Behavior
Read Initiate a transfer of data from a peripheral controlled by the DLP to main memory.
Write Initiate a transfer of data from main memory to a peripheral controlled by the DLP.
Test All operations which do not transfer data to or from main memory.
Echo A confidence test operation which causes the DLP to accept a buffer load (typically 512 bytes) of information from the IOT and return it to the IOT for verification.

The following DLPs are supported by the MCP/VS operating system.

dlps.txt · Last modified: 2013/01/23 16:17 by scott
 
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