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Comms Port Trouble

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3 replies

by anamenow 1 view

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Am running a program called Telix which cannot detect comms port 1 or 2.
There are no hardware faults (tested using other devices and comm ports work fine). The comm port settings are correct (checked them against the comm port settings from the system). Telix is not faulty (tried it on 2 different laptops and they worked fine).
Hasn't worked on two of the PC's I've tried however.
OS = Windows 98 SE
machine = Pentium III 663MHz
What could the problem be? Thanks

3 replies

by teknik

Some mainboards does not let OS or programs fully control I/O ports unless you set their IRQ's Legacy ISA from BIOS in PNP/PCI setup.
Check that IRQ 3 and IRQ 4 are reserved to Legacy ISA in PNP/PCI setup.
If these settings are correct than check Integrated Peripherals in BIOS that if the COMM Ports adresses are set to auto or manual.IF auto change them like below:
COM1-3F8-IRQ4,COM2-2F8-IRQ3.And check that COM2 port is not assigned to infra port.

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