Advanced Communication Board Developer Toolkit 

ABSTRACT:  POLL1.C

POLL1.C is a polled mode asynchronous terminal program. The base address is
238 Hex and no additional jumpers are needed. To build the program, the
ACB.C file must be built/included from the \LIBRARY directory. The program will
terminate when the "Esc" key is typed from the keyboard. This program is set
up for 4800 baud, no parity, 8 data bits, and 1 stop bit. Please remember that
this is a polled program and it does have maximum data rate limitations. For
high speed examples please refer to the DMA and interrupt driven examples.

Cables:

For asynchronous mode, only transmit and receive are needed. The program may
be used in a stand alone loop-back configuration, or with another PC with
an asynchronous COM: port card installed.

  For Loop-Back Plug:

     For Single Ended (RS-232, MIL-188/114)
	Connect Tx to Rx

     For Differential Interface (RS-530, V.35, MIL-188/C, etc.)
	Connect Tx+ to	Rx+
	Connect Tx- to	Rx-

  Point to Point Cable:

     For Single Ended (RS-232, MIL-188/114)
	Connect Tx at point A to Rx at point B
	Connect Tx at point B to Rx at point A

     For Differential Interface (RS-530, V.35, MIL-188/C, etc.)
	Connect Tx+ at point A to Rx+ at point B
	Connect Tx- at point A to Rx- at point B
	Connect Tx+ at point B to Rx+ at point A
	Connect Tx- at point B to Rx- at point A


Dip-Switch and Jumpers:

Note: If a jumper is not listed, that jumper is not relevant to this example.

    ACB-104		ACB-II		ACB-530
	SW1 2,3,4,8 On	    SW1 1 On	    SW1 2,3,4,8 On

    ACB-III		ACB-IV		ACB-V
	SW2 2,3,4 On	    SW1 2,3,4 On    SW1 2,3,4 On

   ACB-VI		ACB-MP		MAXPORT
       SW1 2,3,4,8 On	    None	    SW1 2,3,4,8 On


Build Dependencies:

POLL1.C
 * ACB.OBJ
 * ACB.H
 * Z8530.H

 * Denotes that files are located in the \LIBRARY directory.