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.OBJ file must be linked 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.