https://en.wikipedia.org/wiki/VMEbus https://en.wikipedia.org/wiki/VMEbus Imagine something like ISA but 32 bits wide, with a GPIB-like arbitration scheme. On

https://en.wikipedia.org/wiki/VMEbus https://en.wikipedia.org/wiki/VMEbus Imagine something like ISA but 32 bits wide, with a GPIB-like arbitration scheme. On a backplane that you plug CPU cards and peripheral cards into.