with UATL_DATA_TYPES;               use UATL_DATA_TYPES;
with INTERFACE_DATA_TYPES_488;      use INTERFACE_DATA_TYPES_488;
with SYSTEM;

package HW_SPECIFIC_CONTROLLER_488 is


  procedure HW_SERIAL_POLL (USERS_TO_POLL  : SP_SERVICE_ARRAY;
                            COUNT          : INTEGER_16;
                            RESULTS        : out SMALL_ARRAY;
                            RESULTS_COUNT  : out INTEGER_16);

  procedure HW_SET_LISTENER(COMMANDS  : SMALL_MESSAGE);
  procedure HW_SET_TALKER(COMMANDS  : SMALL_MESSAGE);
  procedure UNTALK_UNLISTEN;

  procedure HW_CLEAR_ALL_DEVICES;

  procedure HW_SEND(QUEUE_NAME : in     MESSAGE_LINK;
                    STATUS     :    out STATUS_TYPE);
  --\ This procedure will send the message that is in the front of the 
  --\ input queue;

  procedure HW_RECEIVE_MESSAGE_EOI(COUNT     :    out INTEGER_16;
                                   STATUS    :    out STATUS_TYPE;
                                   WAIT_TIME : in     DURATION := 0.5);
  --\ This procedure tells the hardware to receive a message that is
  --\ terminated by the use of the EOI line, and returns the
  --\ number of bytes received and the status.

  procedure HW_RECEIVE_MESSAGE_LF(COUNT     :    out INTEGER_16;
                                  STATUS    :    out STATUS_TYPE;
                                  WAIT_TIME : in     DURATION := 0.5);
  --\ This procedure tells the hardware to receive a message that is
  --\ terminated by sending a line feed character as the last byte in the
  --\ string, and returns the number of bytes received and the status.

  -- This is the calling point to receive information from the 488 bus.

  procedure HW_SHADOW_HANDSHAKE(STATUS     : out STATUS_TYPE;
                                DO_SHADOW  : in INTEGER_16);
  --\ This procedure is used to conduct a shadow handshake when the bus
  --\ controller is not the receiver of the message.  This allows the message
  --\ to completely transfer without interruption.

end HW_SPECIFIC_CONTROLLER_488;