It was developed by General Motors to combat the proliferation of incompatible communications standards used by suppliers of automation products such as programmable controllers.
[1] By 1985 demonstrations of interoperability were carried out and 21 vendors offered MAP products.
Although promoted and used by manufacturers such as General Motors, Boeing, and others, it lost market share to the contemporary Ethernet standard and was not widely adopted.
Difficulties included changing protocol specifications, the expense of MAP interface links, and the speed penalty of a token-passing network.
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