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- WHATPORT.COM
-
- For detecting installed serial ports and type of mouse
-
- Copyright 1989, Life Sciences Editorial Services
- 1236 River Bay Road
- Annapolis, Maryland 21401
-
-
- AUTHOR: Peter Petrakis
-
- PURPOSE:
-
- This program detects what serial ports are installed in an MS/DOS
- or PC/DOS system. The type of mouse, if installed, is also shown
- (serial, bus, InPort, HP). If it's a serial port mouse, the program
- indicates whether it's on the IRQ line for COM1/COM3 or the
- IRQ line for COM2/COM4, to guide a user in selecting an
- available COM port for other devices when more than two serial
- ports are installed. Because PCs have only two IRQ lines for
- serial communications, COM3 must share COM1's IRQ line and
- COM4 must share COM2's IRQ line. Unfortunately, two devices
- using the same IRQ line can't be active at the same time. COM3
- can't be used for a printer or modem if a serial mouse is active on
- COM1, for example. Likewise, COM4 can't be used if a serial
- mouse is active on COM2. The following table shows what ports
- are available for other devices when a serial port mouse is present
- on a multiple-port system:
-
- Serial port mouse on COM ports available for other devices
- -------------------- -------------------------------------
- COM1 or COM3 (IRQ 4) COM2 or COM4
- COM2 or COM4 (IRQ 3) COM1 or COM3
-
-
-
- HOW TO USE THE PROGRAM: Just run it.
-
-
- DISTRIBUTION:
-
- The program is provided free by Life Sciences Editorial Services,
- Annapolis, Maryland. It may be copied and distributed promiscuously
- provided no money is charged for it and it is not modified. Although
- the program has been extensively tested, Peter Petrakis accepts no
- responsibility or liability for any mishap resulting from its use.
-
-