PC-NFS Driver Compatibility Kit

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                   Packet Driver Compatibility Software

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1. Introduction



This document describes the Packet Driver driver for PC-NFS. Using this

software, PC-NFS can be used over a driver which conforms to Version 1.9

of the Packet Driver Specification from FTP Software, Inc. This is

revision 2 of this description.



2.Contents



The subdirectory "pktd" includes the following files:



-rwxrwxrwx  1 nfstest       224 Mar 23 11:58 build.bat

-rw-rw-r--  1 geoff         252 Mar 23 09:01 enditall.asm

-rwxrwxrwx  1 nfstest        78 Jun 25 13:06 enditall.obj

-rwxrwxrwx  1 nfstest     11661 Jun 25 13:06 pktd.asm

-rwxrwxrwx  1 geoff        1549 Mar 23 12:00 pktd.mac

-rwxrwxrwx  1 nfstest      1393 Jun 25 13:06 pktd.map

-rwxrwxrwx  1 nfstest      2528 Jun 25 13:06 pktd.obj

-rwxrwxrwx  1 nfstest      5232 Jun 25 13:06 pktd.sys

-rw-rw-r--  1 geoff        9008 Jun 25 13:06 pktdd.asm



This directory includes the driver, PKTD.SYS, together

with source files and a DOS batch file BUILD.BAT. (The build procedure

makes use of include and object files elsewhere in the tree.)



3. Installation.



First, create a subdirectory \NFS on the boot disk of your PC. Copy

the file PKTD.SYS into

this directory. Read the documentation which accompanies your Packet Driver

or Ethernet

network adapter, and install the driver as directed.





Now install PC-NFS. When prompted for the Ethernet adapter, select "Other"

from the menu and type in the CONFIG.SYS line:



	DEVICE=\NFS\PKTD.SYS



At the conclusion of the installation, do NOT reboot. Instead, you should

edit your AUTOEXEC.BAT file. Immediately before the line "NFSRUN", add

the command to load and start your chosen Packet Driver.



Now reboot your PC. 



4. Rebuilding PKTD.SYS



You probably won't need to do this, but if you do the only tool you'll need

is Microsoft MASM 5.1, together with the LINK and EXE2BIN utilities. You

can easily recast the batch file as a makefile if you wish. The DEMUX.OBJ

file contains proprietary PC-NFS code and is not available in source form.



5. Caveats



This code has been tested with various Packet Drivers. It has

successfully been used to allow PC-NFS and Novell NetWare to coexist in

the same PC, using the Brigham Young University (BYU) software

(available from Clarkson and elsewhere). As it stands, it assumes that

the Packet Driver is an Ethernet, with a 1500 byte MTU, Ethernet

framing (src-dest-type) and ARP. If you want to try running over a

serial link, you will need to set the "/x" switch on PCNFS.SYS;

however you will still have to modify PKTD.SYS to convert each frame to

and from Ethernet format.



This version incorporates the fix suggested by John Robert Breeden

(netcom!jbreeden@apple.com) to correct the call to DRIVER_INFO.