Robots w/Lasers

August 8, 2007

Java for NDS?

I know what you’re thinking…”That’s a horrible idea and you’re a horrible person for suggesting it!”

The main problems with Java on DS:
1. Interpreted languages are slower, the overhead is bad on a slower embedded platform
2. No direct memory access. Almost all of the DS hardware is interfaced by reading and writing directly to specific memory locations
3. No primitive unsigned 8-bit types. What were they thinking?

But…I went ahead and did it anyway, just for fun. I didn’t start from scratch, I took Torlus’s KVM port to GBA and used that as a base for getting it to work on DS. Right now, when it starts, you pick a .class file, and it will run it! In addition, using KNI, I’ve written a basic wrapper around parts of libnds, enough to read input from the touchscreen/buttons, and to move sprites around.

Download here: — includes the compiled KVM.nds, some examples along with source code, and instructions on making your own .java files.

To use this demo, place kvm.nds, all the *.class files, and all the *.bin files on the root of your flashcart.
Run kvm.nds, then select a .class file to run. There are a few examples testing various stuff.
Don’t forget to DLDI-patch the kvm.nds

Filed under: Java,Nintendo DS,Software — davr @ 8:36 am

August 1, 2007

DS85 with DLDI support

Someone has added DLDI support to my old TI-85 Emulator. I don’t have any exotic devices, so I can’t say how well it works.

You can download it here: ds85_r3.rar

There’s a forum thread about it going on here:

Let me know if it works/doesn’t work on your particular device.

Filed under: DS85,Nintendo DS,Software — davr @ 12:09 pm

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