# hopf PCI-Bus Receiver (6039 GPS/DCF77)

## Synopsis
`Address:` | 127.127.39.X
`Reference ID:` | .hopf. (default), GPS, DCF
`Driver ID:` | HOPF_P

## Description

The refclock_hopf_pci driver supports the hopf PCI-bus interface 6039 GPS/DCF77.
Additional software and information about the software drivers maybe available from: http://www.ATLSoft.de/ntp.
Latest NTP driver source, executables and documentation is maintained at: http://www.ATLSoft.de/ntp

## Operating System Compatibility

The hopf clock driver has been tested on the following software and hardware platforms:

Platform | Operating System
i386 (PC) | Linux
i386 (PC) | Windows NT
i386 (PC)
| Windows 2000

## O/S System Configuration

UNIX

The driver attempts to open the device `/dev/hopf6039` . The device entry will be made by the installation process of the kernel module for the PCI-bus board. The driver sources belongs to the delivery equipment of the PCI-board.

Windows NT/2000

The driver attempts to open the device by calling the function "OpenHopfDevice()". This function will be installed by the Device Driver for the PCI-bus board. The driver belongs to the delivery equipment of the PCI-board.

## Fudge Factors

`refid string`
  Specifies the driver reference identifier, GPS or DCF.
`flag1 0 | 1`
  When set to 1, driver sync's even if only crystal driven.

### Questions or Comments:

Bernd Altmeier
Ing.-Büro für Software www.ATLSoft.de

(last updated 03/02/2001)