wip/jzintv src NetBSD

jzIntv -- Joe Zbiciak's Intellivision(TM) Emulator for Linux

jzIntv is my attempt to write a complete Intellivision emulator from scratch. I've always wanted to write an emulator from scratch, and Intellivision seemed like a perfect choice: I enjoyed the Intellivision immensely while growing up, there are few Intellivision emulators around (and no GPL'd ones), and legitimate ROM images are available.

The emulator's basic functions are mostly complete. CPU emulation is essentially 100% complete, Sound is about 99.44% complete, controller input is about 80% complete, and Graphics is about 50% complete. To be playable, I need to complete the graphics emulation.

My goal is to produce the most accurate possible emulation of the Intellivision system, including all widely available (and some not-so-widely available) peripherals. This includes items such as the ECS, Intellivoice, and so on. I'd also like my emulator to be as portable as possible. I've already built versions under x86 Linux, Sparc Solaris, and even DOS! (SDL will also let me target Windows and soon MacOS...) We'll see what happens.