Four Bit Badge Assembler/Dissassembler

This is an alternate implementation of an assembler for the Four-Bit-Badge, inspired by an implementation by Mike Szczys. Mike's version uses a classic pythonic approach, and seems to be well-written using ordinary token string manipulation.

This version is an experiment using a more perlesque implementation based on regular expression processing, to see how these 2 approaches compare.

Incomplete Implementation

Warning: This is an incomplete implementation. Some questions on the requirements and specifications remain to be addressed.

To run

For command line help:

fbb_as2.py -h
fbb_dis2.py -h

Testing

To run a test, execute the test.sh script. This will assemble test input with valid statements and error statements. The resulting output binary is compared with a reference implementation. The reference binary is dissassembled and the source code generated is assembled and compared with the original.

Test files:

• test.s Assembly test with valid and error statements
• test.lst Assembly listing output
• test.bin Assembly binary output
• test2.bin Reference copy of test.bin
• test2.s Dissassembled output with hex code
• test3.s Dissassembled test2.bin without hex code
• test3.bin Re-assembled test3.s binary output
• test3.lst Listing output of test3.s assembly