Data General AViiON 5500 Series, Installing, Expanding, And Maintaining

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About AViiON 5500 and 550 series computers
1-3
014–002250–01
Internal options
In addition to the basic components listed in the previous section,
your system might include some of the following options housed
within the computer unit:
System bus options
D
A 40-Mhz expansion CPU/CMMU complex board.
D
4-Mbyte, 16-Mbyte, or 32-Mbyte SIMMs, 32-Mbytes minimum
to 256-Mbytes system maximum. See Chapter 6 for valid
configurations.
D
One or two of the following Input/Output (I/O) expansion
boards:
Dual SCSI-2 wide (20-Mbytes/second) two-channel adapter with
single-ended or differential controllers
Ethernet LAN controller .
VMEbus options
The VMEbus backplane printed-circuit board and card cage allows
one or two of the following 6U-form communications option boards:
D
VFC — VMEbus fiber-optic FDDI (fiber-distributed data interface)
LAN controller
D
VSC/3i —Three-line VME synchronous controller (RS232,
RS422,X.25)
D
VAC/16 — VME Asynchronous Controller that provides as many as
16 ports for asynchronous devices such as user terminals.
D
VDA/255 — VME Distributed Asynchronous host adapter that
supports as many as 255 asynchronous user devices via a network
of cluster controllers.
D
VTC — VME Terminal Controller that supports as many as 255
asynchronous user devices over a standard Ethernet/IEEE 802.3
LAN.
D
VLCi — VME LAN Controller with a connector for a second
Ethernet LAN transceiver. Supplements the Ethernet connection
managed by the integrated LAN controller(s) on the system board
and optional I/O expansion board.
D
VTRC — VME Token Ring LAN Controller that enables a system
to communicate with other computers over an IEEE 802.5 token
ring local area network.
IMPORTANT: Refer to the manual Setting Up and Installing VMEbus Options in
AViiON

Systems for all information regarding these options.