Check out the C64 Programmer's Reference Guide, the B128 Programmer's Reference Guide, and some of the books covering the C64's sound capability for more information and further programming examples. In a future issue I'll go into specifics of sound programming using the SID chip on the B-128. Also a machine language program called SPROC, for Sound Processor, will be presented.
For the more adventurous souls out there thinking about memory expansion, this article will provide you with enough information to expand your B-128's memory from 128K to 256K. Commodore built a number of expansion provisions into the B-series machines and this is one of the simpler to take advantage of. You will need to be proficient at soldering, o know someone who is! The soldering task ahead is not small. There are 292 solder filled holes that have to be desoldered, componets inserted, and resoldered. For those of you who are still thinking of doing this be warned, Commodore claims that opening up the case of your computer and soldering on the circuit board will void your warranty.
