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Media Pro 4000 Brief                                   November 23, 1999

File: AutoPatch_BCS_DRIVER_BR112399.TXT
Module: ICM4020, SEM4020
Title: AutoPatch BCS Driver Operation
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c1999 Anitech Systems Incorporated, 25021 Anza Drive, Valencia, CA 91355

Introduction:

The AutoPatch 1YDM & 4YDM are audio-video crosspoint connection matrices
that can be controlled with serial messages through a serial data link.
The specifications for these devices can be found at www.autopatch.com.

The 'AutoPatch BCS' driver is selectable for serial ports on Anitech's
ICM4020 and SEM4020.  The driver converts certain applicable Media Pro
Control Language statements into appropriate messages for the Autopatch
units.  These commands are described here.

                           --o----o----o--

AutoPatch BCS Driver Translations:

The driver translates three MPCL statements, and supports also the 'SEND'
statement.  There are no current plans to expand this set.

SET 'ap' INP m OUT n ;

  connects output n to input m.  The generated message is CImOnT, all
  ascii characters including the digit strings representing m and n,
  where 'C' is the 'change' token, 'I' is 'input', 'O' is 'output',
  and 'T' is 'take'.  The m and n values are converted to ascii character
  strings with no leading 0's, from 0 through 999 (far in excess of the
  devices' capabilities).

RECORD 'ap' TO p ;

  saves the current configuration of the device as a 'preset' numbered p.
  The generated message is RRpT, where 'RR' is record preset, and 'T'
  is 'take'.  The number p is converted to an ascii character string with
  no leading 0's.

LOAD 'ap' WITH p ;

  loads the device's configuration from a stored preset numbered p.  The
  generated message is RpT, where 'R' is 'recall', 'T' is take.  The number
  p is converted to an ascii character string with no leading 0's.

SEND 'ap' "anystring\xD" ;

  transmits the character string included within the quotes, verbatim, to
  the Autopatch device.  This can be used to transmit commands that are
  not directly supported by the driver.



Autopatch 1YDM 4YDM Serial Connections:

  Pin 1 -- open for RS232, grounded for RS422/485
  Pin 2 -- RS232 RxData (receives from IBMPC DB9 pin 3)
  Pin 3 -- RS232 TxData (transmits to IBMPC DB9 pin 2)
  Pin 4 -- not used
  Pin 5 -- Ground (must be grounded for RS422/485 operation)
  Pin 6 -- RS422 Tx+  \
  Pin 7 -- RS422 Tx-   \_ for RS485, connect pins 6&8 and 7&9
  Pin 8 -- RS422 Rx+   /
  Pin 9 -- RS422 Rx-  /

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Specifications subject to change at any time.

The data in this document incorporates proprietary rights of
Anitech Systems Inc., 25021 Anza Drive, Valencia, CA 91355 USA.
Phone (661) 257-2184     Fax (661) 257-2025
email Mail@Anitech-Systems.com     Web http://www.Anitech-Systems.com

Any party accepting this document does so in confidence and agrees that
it shall not be duplicated in whole or in part, without the consent of
ANITECH SYSTEMS.