AST-5250 CLUSTER - OLD CC832 BOARD                  AST Part Number 202013-001

This four port board has been discontinued by AST.  It does not work on
personal computers operating at 10 MHz or above.  It can be used with
AST-5251/11 Plus or AST-5251/11 ENH Plus local emulation boards or with the
remote emulation board CC432 to get the local or remote cluster capabilities.
It has a switch bank of eight toggle switches which allow the user to select
an IRQ, an I/O address range, Enhanced or Compatibility mode.  This board has
been replaced by the new CC832 board (p/n 202013-003).


SWITCH SETTINGS

    SW#    Position   Purpose
    ===================================================================
    1      ON         Selects the compatible mode
           OFF        Selects the Enhanced/Noncompatible mode
                      (For 5250 Cluster SW#1 is always in OFF position)
    2      ON         Sets IRQ 2
    3      ON         Sets IRQ 3
    4      ON         Sets IRQ 4
    5      ON         Sets IRQ 5
    6      ON         Sets IRQ 6
    7      ON         Sets IRQ 7
    8      ON         Sets High Order I/O range (For PCs or ATs)
           OFF        Sets Low Order I/O range (For XTs)

Note: Only one IRQ switch (Nos. 2 through 7) being on at one time.  At least
      two IRQs must be available on the PC in order to install 5250 Cluster.
      The emulation board must be set at a high priority IRQ and the cluster
      board must be set at a low priority IRQ.


SWITCH LOCATION

    ͻ
                                                     
                                                    Ķ
                                                     
                                                     
                                                     
                                                     
                                   Dip Switch        
                                   +---------+       
                                   |SW1 - SW8|       
                                   +---------+      Ķ
    ͻ            ͼ 
                                   ͼ      
                                                       
