This is the Linux app named Coffee GB whose latest release can be downloaded as coffee-gb-1.0.0.jar. It can be run online in the free hosting provider OnWorks for workstations.
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Coffee GB
DESCRIPTION
Coffee GB is a Gameboy Color emulator written in Java 8. It's meant to be a development exercise. More info can be found in the blog post. First I implemented all the Gameboy CPU opcodes. It’s not exactly the Z80, but it’s pretty close. As a reference, I’ve used the GameBoy CPU Manual - later on I discovered that it has a few typos and is not specific enough for some of the operations. After implementing the opcodes and memory (modelled by an int[] array) I was eager to check whether it’s possible to run some code on it. I had neither the cartridge nor the GPU emulation yet, so even the simplest game wouldn’t be an option. However, when the original Gameboy starts, it executes a simple 256-bytes program, a kind of firmware displaying the Nintendo logo and self-testing the system. That was exactly the thing I was looking for - after just 3 days I had an application running the Gameboy code!
Features
- Cycle-exact Gameboy CPU emulation
- Quite compatible (all the Blargg's tests are passed, although some game still doesn't work)
- MBC1-5 support
- Battery saves
- Support for zipped ROMs
- ROM-based compatibility tests run from Maven
Programming Language
Java
Categories
This is an application that can also be fetched from https://sourceforge.net/projects/coffee-gb.mirror/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.
