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- HOW TO USE INTERLINK TO CONNECT TWO COMPUTERS
-
- Microsoft's DOS 6.0 and later come with a program called
- INTERLINK, and it is one of the best kept secrets around.
- INTERLINK provides a fast and efficient way to exchange
- data between IBM-compatible computers. You do not even
- use a modem when you use INTERLINK.
-
- All you need is an inexpensive cable. This can be a serial
- null modem cable or a bi-directional parallel cable (a
- Laplink type of cable). You can find such a cable at your
- local super computer store. You can also purchase a cable
- from a mail-order firm like Dalco Electronics:
-
- Dalco Electronics
- 275 Poineer Boulevard
- Springboro, Ohio 45066
- 513-743-8042 (phone)
- 800-445-5342 (toll-free)
- 513-743-9251 (fax)
-
- I have bought several cables from Dalco and have always
- found the people there very helpful. Ask for a free
- catalog.
-
- A bi-directional parallel cable (Laplink type) will be
- your best selection because it will transfer data faster.
- Both computers need to be IBM-compatible. Choose a
- computer with DOS 6 or later to be the "client" computer.
-
- The CLIENT computer is the computer at which you type
- commands from the keyboard.
-
- The other computer is called the "SERVER" computer.
-
- So, the server computer is the computer connected to the
- client computer via the cable, and its purpose is to
- serve the client. When connected with INTERLINK, you use
- the client computer to control both the client's disk
- drives and printers and also the server's disk drives and
- printers. This is all done from the keyboard of the
- client computer. It really doesn't matter which computer
- you designate as client or server as long as you keep a
- few rules in mind:
-
- * You need DOS 6 or later on the client computer.
- * The server computer must have DOS 3.0 or later.
- * You will need at least 16K of free memory on the
- client computer.
- * You will need 130K of free memory on the server
- computer.
- * You will need either a null modem cable or a bi-
- directional parallel cable (a Laplink type).
- * The computers need to have a free serial port on each
- computer or a free parallel port on each computer.
- You will use the cable to connect the two computers.
-
- Check the above list to make sure both computers will
- meet the requirements.
-
-
-
- PREPARING THE CLIENT FOR INTERLINK
-
- On the client computer, change to the C:\DOS directory by
- typing at the C prompt:
-
- cd \dos <ENTER>
-
- Do a directory to make sure that INTERLINK is on the
- client computer.
-
- dir inter*.* <ENTER>
-
- In order to use the INTERLINK program, you will need to
- modify the CONFIG.SYS file on the client computer. To be
- safe, you should make a backup of your AUTOEXEC.BAT and
- CONFIG.SYS files on the client computer and have a boot
- diskette. The boot diskette can provide a way to boot the
- computer should you find your machine will not start up
- on the C drive.
-
- * Make a boot diskette. Place a blank diskette in drive
- A and issue:
-
- format a:/s <ENTER>
-
- This can be used to start the computer in an
- emergency. To use it, start the computer with this
- diskette in your A drive.
-
- * Use another diskette and copy the AUTOEXEC.BAT and
- CONFIG.SYS files to it. Here is how: Place a blank
- formatted diskette in drive A and type:
-
- copy c:\autoexec.bat a: <ENTER>
- copy c:\config.sys a: <ENTER>
-
- The INTERLINK program (INTERLINK.EXE) should be located
- in the C:\DOS directory. Use the DOS EDIT program to
- change the client computer's CONFIG.SYS file. Before you
- modify a CONFIG.SYS or AUTOEXEC.BAT file, always have a
- boot diskette (for safety), and save copies of the
- CONFIG.SYS and AUTOEXEC.BAT files on a diskette. These
- can be used in an emergency.
-
- Next, you need to add a line to the client computer's
- CONFIG.SYS file like:
-
- device=c:\dos\interlnk.exe /drives:5
-
- To figure out the number for the /drives switch, you need
- to add up the number of drives on the server computer.
- The default for the /drives switch is 3. So, if the
- server does not have over 3 drives, then you do not even
- have to specify a drive number. Then the device line
- would look like so:
-
- device=c:\dos\interlink.exe
-
- The drives on the server will be reassigned new drive
- letters. Suppose you had two drives on the client
- computer and six drives on the server computer. Then the
- /drives switch should be set at 6. In that case you could
- add a line to the client computer's CONFIG.SYS file like:
-
- device=c:\dos\interlnk.exe /drives:6
-
- Let's use an example that calls for 6 drives on the
- "server." Suppose you issued the command:
-
- edit c:\config.sys <ENTER>
-
- And you observed that the client computer's CONFIG.SYS
- file looked like:
-
- DEVICE=C:\DOS\HIMEM.SYS
- DOS=HIGH,UMB
- DEVICE=C:\DOS\EMM386.EXE NOEMS
- DEVICEHIGH=C:\MOUSE\MOUSE.SYS
- FILES=30
- BUFFERS=20
- STACKS=9,256
- NUMLOCK=OFF
-
- To add the INTERLINK device line, you may insert it near
- the other device line. The modified CONFIG.SYS file would
- look like:
-
- DEVICE=C:\DOS\HIMEM.SYS
- DOS=HIGH,UMB
- DEVICE=C:\DOS\EMM386.EXE NOEMS
- DEVICE=C:\DOS\INTERLNK.EXE /DRIVES:6
- DEVICEHIGH=C:\MOUSE\MOUSE.SYS
- FILES=30
- BUFFERS=20
- STACKS=9,256
- NUMLOCK=OFF
-
-
- If you are using EDIT and you have the CONFIG.SYS file
- the way you want it, you can save the changes like so:
-
- <ALT>
- f
- s
-
- Then restart the computer so the changes in the
- CONFIG.SYS file will take effect.
-
-
- TIPS
-
- Another option is to use a Query command in the
- CONFIG.SYS file like:
-
- DEVICE?=C:\DOS\INTERLNK.EXE /DRIVES:6
-
- Note the question mark after DEVICE. This results in the
- computer prompting you each time you re-start the
- computer, giving you the option to select INTERLINK. The
- prompt will look like so:
-
- DEVICE=C:\DOS\INTERLNK.EXE /DRIVES:6 [Y/N]?
-
- Then answer Y to load INTERLINK or N to not load it.
-
- If you want to load the DEVICE line into high memory (and
- the client computer has this capability), you will save
- about 9K of RAM. To accomplish this, you insert the line
- using a DEVICEHIGH statement like this:
-
- DEVICEHIGH=C:\DOS\INTERLNK.EXE /DRIVES:6
-
-
- PREPARING THE SERVER COMPUTER
-
- If the computer that you plan to use as the server has
- DOS 6 or later, you will not have to do anything special
- to prepare it for use with INTERLINK. In such a case all
- you do is, at the C prompt type:
-
- intersvr <ENTER>
-
- This assumes that the file INTERSVR.EXE is in the C:\DOS
- directory of the server computer and that the C:\DOS
- directory is in the PATH. (With DOS 6.0 and later, this
- is the way DOS installs itself.)
-
- If you are using a computer with an earlier DOS, you can
- copy the INTERSVR.EXE file to a floppy disk, then copy it
- to a directory that is in the PATH of the server
- computer. The C:\DOS directory would be a good choice to
- copy the file to, as this directory should be in the
- computer's PATH. To see what directories are in the
- computer's PATH, at the C prompt type:
-
- path <ENTER>
-
- You can also copy the INTERSVR files to another computer
- using the cable:
-
- 1. Connect the two computers with the cable you
- plan to use for INTERLINK. This can be either
- a null modem cable or a bi-directional
- parallel cable (Laplink cable).
-
- 2. On the computer that does not have INTERSVR,
- change to the directory where you want to copy
- the files. A good choice would be the C:\DOS
- directory.
-
- 3. If you are using the serial ports and not
- COM1, you may have to disable the SHARE
- command in the AUTOEXEC.BAT or CONFIG.SYS
- file. You do this with the DOS EDIT program
- using a REM statement.
-
- 4. At the DOS prompt on the computer where you
- have INTERLINK files, type:
-
- intersvr /rcopy <ENTER>
-
- 5. Then just follow the prompts to copy the
- INTERSVR files onto the other computer. They
- will be copied to the current directory on the
- other computer.
-
-
- USING INTERLINK
-
- Once you have prepared the client and server computers,
- you are ready to test INTERLINK. With the cable installed
- and connecting both computers, do the following:
-
- 1. On the server computer, at the DOS prompt
- type:
-
- intersvr <ENTER>
-
- 2. Restart the client computer. INTERLINK will
- run on start up as the DEVICE line is executed
- on startup.
-
- 3. On the client computer change to the drive of your
- choice, making one of the redirected drives the
- active one.
-
- With everything working properly, INTERLINK will detect
- the cable connection, and you will be presented with a
- screen of information on the server computer. This screen
- will show which drives are assigned different drive
- letters. To get familiar with the different drives, you
- can change to various drives and issue DIR commands for
- your confirmation. You can then use standard DOS commands
- or a "shell" program to copy files from one machine to
- another.
-
-
- BREAKING THE INTERLINK CONNECTION
-
- To break the connection between the two computers, use
- the server computer and press:
-
- <ALT> <F4>
-
- INTERLINK is very easy to use once you have it installed.
- The next time you use it, you can just connect the cable
- and type the INTERSVR command on the server computer.
-
-
- TIP
-
- For more INTERLINK options and information, at the DOS
- prompt type:
-
- help interlnk <ENTER>
-
- ========================================================
-