Terminal Communications Adapter
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
This article describes a terminal communications adapter for an intelligent terminal employing a microprocessor. The adapter is provided with a two-port memory for buffering data. The memory is accessed by the adapter itself and the microprocessor. This adapter is useful to perform high speed data communication without causing overruns and/or communication response errors which occur in conventional arrangements having no two-port memory and employing the DMA or interruption techniques. As shown in Fig. 1, the terminal 1 includes a terminal communications adapter (TCA) 2 which is provided with a two- port memory 4. The TCA 2 has means (not shown) for accessing the memory 4 when it receives or transmits data from or to a communication line 7.