All files with the extension 'asm' are assembler source files. The assembler for the DLX 
processor is called 'dlxasm'. Invoking 'dlxasm Demo.asm' will generate the file 'dlx.out'. The 
VHDL simulator automatically loads this file into the DLX system memory. To simulate one of 
the provided test programs, you have to rename the 'out'-File to 'dlx.out'.

A binary version of 'dlxasm' for SunOS 4.1 is available at 
http://www.cs.adelaide.edu.au/users/petera/designers-guide/DG-DLX-material.html.
You can download the C source code of 'dlxasm' from the same URL. Unfortunately I was not 
able to compile these files. Therefore I can not help you if you have trouble, too.

