DescriptionThe OMEGA ® Advanced Communications Boards (ACBs) allow the user to configure a high speed, low cost SYNC/ASYNC communications solution. Protocols supported include X.25, SDLC, HDLC, MONOSYNC, BISYNC, and high speed ASYNC. The serial Communications Controller allows Full Duplex communications at speeds greater than 1M bps without the added cost of an intelligent communications coprocessor. This feature gives the ACB user an unparalleled cost/performance ratio. Models are available with one or two communication ports and support for a variety of communication standards. Both ports can be operated in full duplex DMA mode. Using this feature, both channels can operate at very high data rates with DMA.