I need help about requirements

Hello eveyone!

Well am a student in Turkey and I am about to finish my high school and I want to aplly University of Oslo.Actually I read the requirements but I get mixed.I saw that i have to get at least 5 from IELTS and I got 6 from it by the way I want to study in computer science.Anyway I read that it also wants IB,AP, or A level from British system (I forgot the name of exam) but I cant take IB or A level from British exam because it is not enable in my country. I can only take AP and it happens once in every year on Aprıl but the point is deadline for admissin is on February 1 so what do I have to do? I really want to aplly the Unıveristy of Oslo
I would appreciate it if you guys help me out as quick as possible (I have limited time)
Thanks!