1. Building a disassembler: a. Suppose that you are to write a Disassembler for a SIC program. What tables and data structures would be required, and how would they be used? How many passes would be needed? What problems would arise in recreating the source program? b. Suppose you wanted to upgrade your Disassembler to handle a SIC/XE program. How would it deal with the various addressing modes and instruction formats?

2. The two passes of the assembler should provide methods of error detection. Discuss the types of errors that might arise during the assembling of a SIC/XE program. When and how each type of error be detected, and what action should the assembler take for each?

3. Assuming that we wanted to make a SIC program relocatable, this would lead to having a large number of modification records. Explain the problem addressed and suggest plausible solutions on how to include the required relocation information without this large increase in object program size?