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-
- CD-Check is a utility to trap a carrier detect on COM1 thru
- COM4. There is no warrante expressed or implied. Use at
- your own risk. CD-Check is the property of Scott McKnight.
- It is free for use in a non-commercial environment. For a
- commercial liscense to use CD-Check, send $10:00 to
-
- Scott McKnight
- 377 Bevill Ave
- Blytheville, AR, 72315
- FIDO: 1:389/2001
- PH: (501) 532-6212 or 5641 (1200-14400, HST/V32)
-
-
- Instruction for using CD-Check is simple. Type the command:
-
- CD-Check [Port#]
- example: CD-Check 1
-
- This example will check COM1 for a carrier detect. If it finds one, it
- will exit with errorlevel 0. If no carrier is detected, it will exit
- with errorlevel 1.
-
- A simple batch file routine for trapping the errorlevel would go
- something like this:
-
- :CD-Check
- CD-Check 1
- if Errorlevel 1 Goto No-carrier
- if Errorlevel 0 Goto Carrier-on
- :No-carrier
- Goto routine-1, no carrier is detected
- :Carrier-on
- Goto routine-0, a carrier is detected