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      interna~       NJer(io
      To        Distribution                           Date           December 14, 1977


      From      Frank Ludolph                          Location       Palo Alto


      Subject   Alto Hardware Engineering Changes      OrgHnization   XEOS


)(ERO)(
      Filed on: [XEOS] EO>Current.bravo.




      Frank Ludolph
      Coordinator, Whole Alto World



      Distribution: C. Anthony, J. Arnaud, J. Cucinitti, B. DeGrasse, W. Duvall, D. Green,
             R.Hunt, H. Pangle, D. Sonderegger, W. Winfield, H. Yeary, R. Yost


      cc: Liz Bond, Terry Haney, Don Stewart, Doug Stewart
           CURRENT ALTO HARDWARE REVISION LEVELS

                  LEVEL   DRAWING   DESCRIPTION
ALTO               B      216305    BWB Assy
                   C      216273    Mem Stg. Module
                   B      216421    Terminator Module
                   F      216381    Arithmetic Logic Unit
                   0      216373    Control Board (lK)
                   B      216484    Control Board (2K)
                   F      216365    CRAM
                   E      216389    Disk Control
                   B      216577    Extender Board
                   G      216347    Memory Address Interface
                   E      216312    Menl0ry Data Interface
                   D      216339    Display Cont. Module
                   D      216323    Ethernet Module
ALTO II XM         B      216645    Mem Address lnt. Module
                   C      216652    B\VB Assy
                   A      217115    Mem Data Interface Module
                   A      216642    2K Control Module
                   A      216695    1K Control Module
                   B      216644    128K Mem Stg Module
                   B      216646    Memory Expansion and Terminator
DISPLAY            E

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