DEC VAX 11/730

This system and a cabinet containing a RA81 and TU80 were donated by John Wilson.

The VAX 11/730, code-named "Nebula", was introduced in April of 1982. It is a bit slice implementation of the VAX architecture, uses an 8085 for a boot processor. It runs at about 3.70 MHz, which yields about 0.3 VUPs (about 0.3 MIPS), or about 1/3 of the performance of the original VAX 11/780. The I/O is Unibus.

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The Module Utilization chart from the 11/730.

 Backplane Slot Part Number Function Description
 DD11-DK 9  M7302 
  8 M7485 UDA-50 UNIBUS to radial disk interface PR board
  7 M7486 UDA50 Controller for SDI disk drives (UDA SI)
  6   
  5 M8396 DMF32 8 asynchronous lines
  4   
  3   
  2   
  1 M7454-J TU80K-CP TU80 interface (Dilog/Digital)
 11730-A 14   
  13 M7521 DELUA-AA Ethernet
  12 M8750-CP MS750 1Mbyte MOS memory
  11 M8750-CP MS750 1Mbyte MOS memory
  10 M8750-CH MS750 1Mbyte MOS memory
  9 M8750-CJ MS750 1Mbyte MOS memory
  8 M8750-CP MS750 1Mbyte MOS memory
  7 M8394-K3 WCS Writable Control Store
  6 M8391-E MCT Memory Controller
  5 Not Used  
  4 M8390-D3 DAP Data Path
  3 Not Used  
  2 M8389-C FPA Floating Point
  1 Not Used  

Click on the image for a larger view.

Click on the image for a larger view.

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