I have both the algebra fx 2.0 plus and the fx-9860g. The latter model has a slightly larger screen and is faster. However, it lacks the CAS. More precisely, I managed to upload some CAS solutions I found online, about 8 yrs ago (jeuxcasio.com). However they are clearly inferior to the capabilities of the fx 2.0 plus. For instance, calculating integrals is quite limited (e.g. ln(x)dx wont work). Therefore, I was wondering if the software of fx 2.0 plus could be ported to fx-9860g?