troubleshooting Question

Utility to View / Change IRQ settings on Dell OPtiplex GX1 using running MS DOS

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I am installing an legacy application on a Dell Optiplex GX1 small form factor machine. The Operating system is MS DOS. The application has certain IRQ built in to it to access the COM ports.

Serial Port 1:3F8, IRQ4 and Paralell port 1: 378, IRQ 5 DMA1

Earlier we used to install this Application on Compaq Dexpro MMX machines. These are now just too old and need to be replaced.
It was easier on Comapq machines to access the BIOS settings using the F10 function. But I cant find  such an utility on Dell machines or maybe  Iam not looking into right places.
Can anybody please direct to find an utility which will let me peek into the IRQ assignments of different On-board and Add-on devices on Dell optiplex GX1 me..?

Many thankx.
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