The Alpine has 64MB reserved for the OS, Extended rom, radio stack, splash screen and so on which is updated using a PC.
64MB reserved for Storage which you can use to store data.
128MB split between program memory and memory storage, user adjustable.
What you are describing is the official size of the Storage which as standard shows up as less than 60MB by the time it is formatted.
XDA IIS - Custom ROM - Gone
XDA IIi - Custom ROM - Gone
XDA Exec - Custom ROM - Gone
XDA Orbit - Custom ROM - Gone
XDA Orbit 2 - Custom ROM - Gone
XDA Ignito - Custom ROM
XDA Guide - Custom ROM - Gone