{L A N t a s t i c

          {A2Mbps and E2Mbps MC Adapters}

          {Standard Bus and Micro Channel}

          LANtastic  A2Mbps and  E2Mbps MC  adapters are  the perfect  way to
          economically network small or medium-sized businesses with IBM PC
          or Micro Channel compatible computers. 

          Both   Micro   Channel   Architecture   and   Industry   Standard
          Architecture  (ISA) adapters include a 10Mhz coprocessor, and 32K
          of on-board  dual-ported RAM.  Each 2Mbps  adapter also  includes
          software-selectable IRQ and RAMBASE address settings.

          Artisoft's  implementation of the NetBIOS standard is loaded into
          and executed within the adapter. This plunges the NetBIOS draw on
          a PC's base RAM down to just 2K and off-loads  network processing
          onto  the  adapter.  The  cards  are  easy  to  install  and  use
          inexpensive dual-twisted pair cable.

          LANtastic A2Mbps and  E2Mbps MC adapters drive cable  lengths of up
          to 1500 feet per network with Artisoft cable, up to 300 feet with
          AT&T telephone-grade cable, and will handle 32 nodes per segment.

          [{Specifications}]

          Hardware compatibility:

          Standard Bus (ISA):
          o     IBM PC, XT, AT, PS/2 model 30, 286 and compatibles, and    
                386-based IBM PC bus compatibles
          o     Approved for up to 33MHz 386, 20MHz 286 and 12MHz 8088     
                systems 

          Micro Channel:
          o     IBM PS/2 Micro Channel and compatibles

          PC requirements:

          o     One floppy drive 
          o     One 16- or 8-bit slot
          o     PC or MS DOS 3.1 or higher (3.2 not recommended).

          Interrupt Request Line (IRQ):

          o     Standard Bus (ISA): 2, 3, 4, 5, 6, 7, and AT 10, 15
          o     Software selectable
          o     Micro Channel: 3,4,5,6,7, and 9

          Selectable I/O Base Address (ISA):

          o     Selectable by  on-board switches: 220h, 240h,  260h, 280h,
                2A0h, 320h, 340h, 360h

          RAMBASE Address:

          o     Standard  Bus (ISA):  Uses 32K  above  640K boundary  at
                selectable addresses:  A000, A800, B000, C000, C800, D000,
                D800, and E000 (software selectable)
          o     Micro Channel:  Uses 32K  at selectable  addresses: 8000,
                8800, 9000, 9800, A000, A800, B000, B800, C000, C800, D000,
                D800, E000, E800, F000, F800

          Buffer RAM:
          o     On-board 32K bytes of dual-ported buffer RAM

          Coprocessor:
          o     On-board 10MHz

          Data transfer rate:  
          o     2.0 Mbps

          Topology:
          o     Bus topology
          o     Star and tree configurations with optional Hub

          Network cable lengths:
          o     Up to 1500 feet with Artisoft cable 
          o     Up to 1000 feet with Belden 9729 or Plenum 89729
          o     Up to 300 feet with AT&T  telephone grade solid conductor,
                twisted pair  wire (We do  not support cables  not listed
                above.)

          Network size:
          o     Up to 32 computers without additional hardware
          o     Up to 300 computers with optional Hub

          Connection method:
          o     Rugged  DB9 connectors,  built-in "T"  connector on  each
                adapter 
          o     Optional DB9 to phone jack (RJ11) adapters

          Standards:
          o     NetBIOS, EIA-489, EIA-422, SDLC

          Protocols:
          o     CSMA/CD and CSMA/CA

          Power requirements
          o     +5V 1400 mA maximum
          o     +5V 900 mA typical

          Options: 
          o     Hub unit  extends network beyond standard  network lengths
                and creates star or tree topologies
          o     DB9 to phone jack (RJ11) adapters
          o     Remote boot ROM daughter board for ISA
          o     Additional  RAM daughter  board for  ISA that  can reduce
                LANtastic NOS's RAM overhead in workstations  to 0K and in
                servers to under 32K