B&B Electronics 3PXCC1b, 3PXCC1A, 3PXCC2b, 3PXCC2a manual Documentation No.3PXCC1x-2x-3903

Checking Windows NT Diagnostics for Available Address/IRQ’s (Windows NT 4.0)

Click on Start / Programs / Administrative Tools / Windows NT Diagnostics.

Left-click on Resources.

Find a free IRQ in the following list. Any number that is seen on the left hand side of this screen is an IRQ that is currently being used. The object is to find a number of IRQ(s) not listed and set your port(s) using those IRQ’s.

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Left-click on I/O Port in Resources. Tab to view currently used addresses.

Scroll through the list, checking 03F8H, 02F8H, 03E8H, 02E8H. If one of these is available, use it. If not, check alternates.

Find a free address in the list. Most desktop PC’s have a COM1 and possibly a COM2 already on their system, which will be seen in the list. You may have to start at COM3 or COM4 to start your addressing of the ISA card you have. If these addresses are used you may have to resort to the Frequently Unused Port Addresses (found in Chapter 4, Table 3) of this manual. Write these open addresses and IRQ’s down for later reference.

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B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104	B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445	B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445