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microchannel architecture (MCA)

The Microchannel Architecture (MCA) is a 32-bit bus that is incompatible with all bus standards and is used in PS/2 computers and in the RISC System/6000.

Overview of PC buses

Overview of PC buses

The MCA bus operates as a system bus and has a separate controller with a frequency of 10 MHz, a data transfer rate of 20 MB/s and a 32-bit bus slot with 202 contacts. The bus is divided into several sections for 32 bit, 16 bit, 8 bit and video extension. The data transfer rate is 20 Mbit/s. It is incompatible with the ISA bus.

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Englisch: microchannel architecture - MCA
Updated at: 26.03.2008
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