README.TXT Driver File Contents (ppm.exe)

              Compaq Microcom APT Modem Driver
                       Version 5.01



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This document contains important information about the Compaq Microcom 
APT Modem Driver (referred to as the APT Modem Driver) 
including the following topics:

  *  Copying files from the APT Modem Driver disks

  *  Information not found in the User Guide
  *  Files included on the diskettes


This version of the APT Modem Driver is supported under the 
following operating system:

  *  Windows 3.1
  *  Windows for Workgroups 3.11
  *  Windows 95


Most of the files on the APT Modem Driver installation disks are
compressed. These files are not usable until they are expanded.
Setup expands the compressed files as they are copied onto your
hard disk.

If you need to copy files directly from the APT Modem Driver
disk without using Setup, follow these steps:

  1. Copy EXPAND.EXE from the APT Modem Driver disk onto
     your hard drive. (This utility expands compressed files to
     a usable format.)

  2. Insert the disk with the file you want to expand into drive
     A: (or any floppy-disk drive).

  3. Type the following and press ENTER:

        EXPAND x:<filename> y:<filename>

     where x: is the disk drive you are copying from (source)     
           y: is the disk drive you are copying to (destination)

     The compressed file is expanded as it is copied onto your
     hard-disk drive.


Setting an Interrupt Request (IRQ) for the Parallel Port in
Windows 95

     In most applications, your modem should operate properly
     when installed and configured as indicated in your user

     In some applications, for example, Remote Network Access, or
     when using fax software packages, setting an IRQ for the
     parallel port of external (desktop) V.34 modems can enhance
     the performance of your modem.

     Use the Device Manager to assign an IRQ to the parallel port.
     (The Device Manager is accessed by double-clicking on the
     System icon in the control panel.)   

Using Microphone II with the Parallel Port
     If you are using Software Ventures' Microphone II or
     Microphone Pro, Compaq Microcom recommends that you set the 
     baud rate for a redirected COM port to 19200 or below. The
     reason for this is in a ZMODEM file transfer, Microphone
     uses the baud rate as a means of determining when specific
     portions of a file should be retransmitted. It is possible
     to see a number of retries during a transmission which are
     due to Microphone expecting data before it is present.
     Reducing the baud rate reduces these occurrences without
     affecting file transfer throughput.

Some Applications Report a Hardware Not Present Error
     Some applications report an error that hardware is not present 
     if a redirected COM port is open, but the APT Modem to be used 
     by the COM port is not powered on. Powering on the APT Modem 
     and re-opening the COM port solves this problem.

Application Compatibility Section in PPM.INI (Windows 3.10 Only)
     Some applications require special processing by the APT 
     Modem Driver. This feature is controlled using the
     [Application Compatibility] section in PPM.INI, the APT
     Modem Driver initialization file. One application which requires
     the special processing is Digital Communications Associates'
     Crosstalk 2.0 (and 2.0.1). The proper line to enable this
     processing for Crosstalk will be added automatically if the
     APT Modem Driver is installed using the Setup program. If 
     the APT Modem Driver is installed manually, add the following
     lines to PPM.INI located in your Windows directory:

     [Application Compatibility]

Windows Terminal XMODEM file transfers
     Using Windows Terminal for XMODEM file transfers results 
     in the removal of any CTRL-Z end-of-file characters from the 
     file that is transferred. This data is not lost in 
     transmission; Terminal's implementation of the XMODEM file 
     transfer protocol does not write end-of-file characters to 
     the disk on the receiving system.

Using The DOS APT Modem TSR
     NOTE:  The DOS APT Modem TSR is not supported under
            Windows 95.
     The DOS APT Modem TSR (PPM.EXE) provides an interface 
     which is compatible with the NCSI/NASI communications 
     specification. Once loaded, PPM.EXE allows access to a 
     APT Modem connected to LPT1, LPT2, LPT3, or installed
     in a PCMCIA slot. The port is given a unique NCSI/NASI name
     as follows:

        Modem Port        Server:General:Specific
        LPT1            MICROCOM:MODEM__:LPT1__________
        LPT2            MICROCOM:MODEM__:LPT2__________
        LPT3            MICROCOM:MODEM__:LPT3__________
        PCMCIA          MICROCOM:MODEM__:TCF1__________

     For PCMCIA modems, the port I/O address and IRQ are determined
     by PCMCIA Card Services if loaded.

     PPM.EXE is designed to be loaded before Windows is loaded. 
     The TSR is loaded by typing

        PPM <Enter>

     at the DOS prompt.

     PPM.EXE can be unloaded by typing

        PPM -U <Enter>

     at the DOS prompt.

     _MSSETUP.EX_	Compressed Setup file.
     CTL3D.DL_		Compressed Windows driver support file.
     EXPAND.EXE		Decompression utility.
     FIRMUP.EX_		Compressed firmware update utility.
     DEINST.EX_		Compressed deinstall utility.
     MCHOOK.DL_		Compressed Windows driver support file.
     MCMETER.DL_	Compressed firmware update support file.
     MMISYS.DL_		Compressed status monitor support file.
     MSCOMSTF.DL_       Compressed setup support file.
     MSCUISTF.DL_       Compressed setup support file.
     MSDETSTF.DL_       Compressed setup support file.
     MSINSSTF.DL_       Compressed setup support file.
     MSSHLSTF.DL_       Compressed setup support file.
     MSUILSTF.DL_       Compressed setup support file.
     MWATCH.EX_		Compressed status monitor utility.
     PPM.DR_            Compressed Windows 3.10 driver.
     PPM.38_            Compressed Windows for Workgroups 3.11 32-bit driver.
     PPM.VXD            Windows 95 32-bit driver.
     VPPM.38_           Compressed Windows 32-bit support driver.
     PPM.EX_            Compressed DOS NCSI/NASI TSR driver.
     PPM.HL_		Compressed Windows driver help file.
     PPMCPL.EX_         Compressed modem control applet.
     PPMSETUP.EX_       Compressed setup support file.
     PPMSETUP.HL_       Compressed setup help file.
     MNPIDPP3.INF       Windows 95 driver database file.
     README.TXT		This file.
     SETUP.EXE		Setup program.
     SETUP.LST		Setup support file.
     TCENABLE.EXE       PCMCIA point enabler.

Intel PCI Motherboards with Integrated 16550A and WFW311
   If you are using Windows for Workgroups V3.11 or Windows V3.11 on an Intel 
   PCI based system with 16550A emulation integrated on the motherboard make 
   sure that the file SERIAL.386 in the Windows SYSTEM directory has been 
   updated to the latest revision.  This combination can cause Windows to lock 
   up when accessing a COM port.

Excluding Upper Memory
   When using an expanded/upper memory manager (EMM386, QEMM, WIN386) without 
   Card/Socket services loaded, a range of memory must be excluded in order 
   for the raw enabler to read the Compaq Microcom 520 56K PC Card Fax information 
   and enable the card. 
   Most Card/Socket services will require a 4K block of memory be excluded.  
   If an expanded/upper memory manager is not being used, a similar range must 
   be excluded in the [386enh] section of system.ini to keep WIN386 from 
   backfilling this area.  We recommend excluding C800-C8FF.

FarPoint F/Port EPP Board
   Instructions for use of the FarPoint Communications F/Port EPP board for 
   the PC:
      1.	Follow board installation instructions in the F/Port manual.
      2.	Run the FPCONFIG program with the FPORT argument to configure the 
         board as an 8-bit bi-directional parallel port.  Do not configure the 
         board as an EPP, as this mode is not supported in the current release 
         of PPM.DRV.
      3.	Assign the F/Port to one of the standard LPT1, LPT2, or LPT3 device 

This product is targeted for all Compaq Microcom APT modems.

The following are the known problems with this release:
   1. On the NEC Versa using Card & Socket services as supplied by NEC (not 
      updated from SystemSoft), the Compaq Microcom 520 56K PC Card Fax is not 
      completely recognized as a modem.  
      The result is that the APT Modem applet lists the modem as available, 
      but the driver cannot communicate with it in parallel mode.  Removing 
      Card & Socket services allows the driver to function correctly.  The 
      problem is related to the type of PCMCIA Configuration Manager shipped 
      with the Versa.  Updating the CS/SS to a later revision should eliminate 
      the problem. This often applies to other machines as well. When in doubt, 
      get and use the latest CS/SS available.
   2. There is a compatibility issue under Windows95 with the Compaq Microcom 
      520 56K PC Card Fax and Toshiba Satellite Pro laptops that come with the 
      infrared ports.  
      Toshiba ships with the infrared port disabled in the BIOS, but Windows 
      detects the port through the PNP mechanism and tries to configure it to 
      the same COM port that the Compaq Microcom 520 56K PC Card Fax was configured 
      to and this causes the system to lock up during bootup.  To fix the problem 
      you must do the following:
         * remove the Compaq Microcom 520 56K PC Card Fax.
         * open the MODEM UI from the control panel and remove the entry for 
           the Compaq Microcom 520 56K PC Card Fax modem.
         * restart the system and get into the system BIOS.
         * change the infrared port settings to the next available COM port.
         * insert the Compaq Microcom 520 56K PC Card Fax.
         * reboot the system.

Download Driver Pack

How To Update Drivers Manually

After your driver has been downloaded, follow these simple steps to install it.

  • Expand the archive file (if the download file is in zip or rar format).

  • If the expanded file has an .exe extension, double click it and follow the installation instructions.

  • Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.

  • Find the device and model you want to update in the device list.

  • Double-click on it to open the Properties dialog box.

  • From the Properties dialog box, select the Driver tab.

  • Click the Update Driver button, then follow the instructions.

Very important: You must reboot your system to ensure that any driver updates have taken effect.

For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.

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