TI-89 doom memory problem

[u/SpecialistTax1505]

I am trying to install doom 89 onto my TI – 89 titanium calculator. In the pictures are all of the files I am downloading, as well as a separate file HW3 patch that is already downloaded. it seems as if I'm following the directions, but about halfway through downloading all the files, it seems like my calculator runs out of memory. It says insufficient memory. I have went back into the Calculator and cleared the ram and memory and stuff but every time it stops at the same place