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Microvision homebrew? (part 5)

atari2600land

Entry posted by atari2600land ·

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OK, so I contacted a guy on Digital Press forums who said he had some spare Microvision games, but they all work. So I'd be taking apart a working Microvision game. I want Cosmic Hunter since that is the game I'd be using to make my Frogger game. I plan to go to Radio Shack tomorrow to get the Quickstart PCB. I wonder how I would take a Microvision cart apart. I don't see any screws or anything to unscrew. For a cartridge design from 1979, they were really well-built. Too bad they suffer from so many design flaws. Also, if you're looking to want to buy Frogger if I ever get done with it, well then, it would be a huge cost, made up by the purchasing of Cosmic Hunter carts and quickstart PCBs. Microvision game boxes look like boxes your checks come in: Two parts. It just comes to me as interesting that I'm a big fan of technology from before I was born!


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EricBall

Before you tear into the cartridge you probably should play around with the QuickStart board and get up to speed on SPIN and PASM. As a first challenge you can use the QuickStart as a kind of logic analyzer to capture the input to the LCD controller. (Hint: you want to use the PASM WAITPNE intstruction.) Just check the voltage level first as the QuickStart is a 3.3V part and you don't want to accidentally zap it with 9V of input (although you can probably tap the 9V battery for power to the QuickStart board).

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