ConstructionThe Heritage/1 minicomputer will consists of several rack-mount "units" such as the CPU, the Memory Unit, the Comm Unit and others, housed in a 19-inches industrial rack possibly 20RU high. An external bus called U-BUS connects all units together whereas each of those possess its own specific internal bus.
The CPU in particular is housed into a multi-cards frame. Cards are built using 8x5.5 inches prototyping boards that plug to the frame's Backplane.
The CPU Backplane consists of 96-pins and 120-pins DIN 41612 connectors conveniently wired into different interal buses. Some complex circuits such as the Instructions Decoder and Sequencer (IDS) expand among several cards.
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