How to port simple code to the latest version

Hello,

I'm talking about the ps2keyboard.lib file available in the "files" section of the group.
I was able to compile it under the old 10.21 on an RCM4100.
I changed the interrupt instruction to SetVectExtern4000.

Now I want to compile it with the 10.72 but the compiler returns a lot of errors I cannot understand.

Has anyone already ported this simple library? What are the major changes I should aware of?

Thank you