One Big Prob most memory sellers only list 8MB as largest SIMMs for this model. Simms need to populate the banks in groups of two. Some motherboards allow the first slot of simms to be installed singularly, but all others have to be paired.
Some programs can access more memory.
It depends on the motherboard's number of slots compared to number of memory banks. Each bank has to have the same value for each chip. I have a 386 DX with eight 30 pin slots in ONE bsnk. All eight have to be installed and of the same value. Most often it is banks of two slots.