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Full Size
PICMG Single Board Computers (SBCs)
PICMG 1.0 is an industry specification that defines a CPU Board / Single Board Computer (SBC), form factor and
corresponding backplane connectors for PCI-ISA passive backplanes. This
standard moves components typically located on the motherboard (i.e.
memory, CPUs and chipset components) to a single plug-in card. PICMG
1.0 CPU Cards look much like standard ISA cards with extra gold finger
connections for the ISA bus and the root PCI bus. The "motherboard" is
replaced with a simple "passive backplane" that has only PCI and ISA
connectors attached to it. These backplane connections include a
dedicated system slot of the PICMG 1.0 CPU and various connections for
standard ISA and PCI peripheral cards. This backplane is simple and
robust, with a very low likelihood of failure, given its passive
nature. This allows a much lower Mean Time to Repair than classic
computer motherboard approaches, as electronics associated with CPUs
can be replaced without having to remove peripheral devices.
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