properties

• Four RS-232 ports for asynchronous communications.
  
• Suitable for XENIX/UNIX (SCO, AT&T, Interactive, UNIXWARE), MS/DOS, WINDOWS/NT, WINDOWS/95, OS/2, MS/WINDOWS, PICK, CONCURRENT DOS, QNX, PROLOGUE, MUMPS, ... etc.
  
• IBM PC/AT, PC/386, PC/486, Pentium hardware compatibles.
  
• Interrupt selectable. (IRQ2 - IRQ7)
  
• I /O address selectable.
  
• AST FourPort/XN compatible.
  
• COM1 and COM2 compatible.
  
• Auto-detect 16450 or 16550 or 16650 chips on board.
  
• Baud rate up to 115200 for normal speed board and up to 460K for high speed board.

description

The Alpha4/1 port adapter provides four asynchronous serial communication ports (RS-232), which link the computer and serial peripheral devices such as terminals, modems, serial printers, plotters, ... etc.

The Alpha4/1 port adapter is particularly suited to facilitate the connection of terminals (VDUs) in multi-user operating systems. The Alpha4/1 board may be installed in any IBM PC/AT, PC/386, PC/486, Pentium or hardware compatible systems. To accommodate a variety of operating systems three jumper blocks and one switch permit maximum flexibility of configuration. You may select which interrupt (IRQ2 - IRQ7), I/O address, and interrupt vector you desire.