IRQ in Custom BIOS

[angelog]

Dear all,
I am trying to bring back to life a measurement system that uses a motherboard model PFM-540I.
I discovered that the original problem of the system was related to the motherboard itself, so I managed to purchase a second-hand replacement motherboard on eBay that is working properly. After replacing the motherboard, the system booted normally, but it was unable to communicate with the measurement instruments.
After extensive analysis, I discovered that the original motherboard uses a customized BIOS, and some IRQs are specifically associated with the measurement modules. I cannot change these IRQ assignments directly through the BIOS settings, so it seems that I may need to modify the BIOS itself in order to make this replacement motherboard behave like the original one.
Could anyone recommend a tutorial or provide guidance on how I could perform this kind of BIOS modification?

attached is how the IRQ in BIOS must be

Best regards,

[ngocthienta]

Have you tried to back up the BIOS from the original board and flash it to the new board?