JAS runs best on machines that have at least 2 gigabytes of memory.
JAS is written in Visual Age Smalltalk (VAST). VAST is a 32 bit application that is compiled with the /LARGEADDRESSAWARE switch, which means that JAS can use “1 GB of additional virtual address space above 2 GB”.
Click here for instructions on how to use 3 gigs of memory in JAS.