This page describes the pinout and signal names for NuBus as used on
Apple computers [Macintosh and NeXT Computer].
The NUbus expansion interface is obsolete and should not be used for new
designs. NUbus is a 32-bit bus and was defined by IEEE Std
1196-1987.
NuBus was used as an Apple expansion bus with 32 bit address and 32 bit data bus operating at
10MHz, with a throughput of 40MBps.
The NuBus card had a form factor of 12" x 7", and used a standard 96-pin
three-row (VME)
connector.
NuBus90, increased the clock rate to 20Mhz providing a throughput of
70Mbps. NUbus was replaced by the PCI expansion bus.
Additional pinout tables for other Apple protocols are listed on the
Apple Computer Buses
page.
A full list of buses found on any computer type is listed on the Personal Computer Buses
page.
NuBus Pin outs and Signal Assignments
NuBus Row A Pinout
NuBus Row B Pinout
NuBus Row C Pinout
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Nubus was also released by TI in 1983, before it became an IEEE standard. The two interfaces are not the same.
Nubus is obsolete and should not be used for new designs, use the PCIe Interface as an upgrade path.
There are no IC's or components listed because the bus is out-dated;
However, refer here for a complete listing of Component and Semiconductor Manufacturers [alphabetic listing].
Engineering Key words: Apple, Macintosh, MAC, NUbus, Computer
Buses, Connector Pin-Outs, Pin out, Signal Name, Standard, Interface
Standard,
Specification, Spec, Physical Interface, Description, Personal Computer
Interface, Peripheral, Printer Interface, Obsolete, Out-dated, Legacy.
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