The Dualog

I got myself a USB Datalink dongle to upload binaries to my Saturn through the Action Replay Plus cart. Handy little gadget for those that don’t have an ancient computer and a PC Comms card.

While working on fixing some things in Dualis I decided to try to add some CompactFlash emulation capability to DeSmuME. After some code massaging I got file reading working, as can be seen in the screenshot below from the CF version of DSLua. I have supplied the code to the people responsible for DeSmuME so this functionality should be available in future versions.

I was tinkering with my GBA emulator today for a change, trying to incorporate some of the fixes that I’ve done to Dualis over the past couple of months. It’s not ready for another release just yet, but it’s progressing slowly..

After messing about with my FAT emulation code for a while I got file creation/writing kind of working, as can be seen in the below screenshot. The image seen in the emulator window is written to the disk as a .bin file and then converted to a .png.

For some reason the red text becomes blue, but other than that it appears to be working fine.

After fixing a bug in the emulation of the BIOS division function, a few demos that had previously been acting weird started working.

NitroTracker v.0.1.4

Unnamed strategy game demo

Saitei no taipo…de arimasu!

Having nothing better to do (*cough*) I decided to port my as of yet unreleased Gameboy emulator to the DS. Bar a few silly typos, it proved to be quite a simple process, although it’s in need of a lot of optimization.

Of course it’s not quite the same feeling as running a GB emulator in a GBA emulator in a DS emulator on a PC.. :T

I’ve released a new version of my ARM (and Thumb) instruction tester. This version adds a few LDM/STM tests on the ARM side. The archive now also includes an .nds for those emulators that doesn’t run .bin files. The reason for Desmume 0.3.3 not being able to run ARMwrestler is - to my understanding - that it doesn’t emulate the framebuffer mode yet. Of Dualis (20.1) and iDeaS (1.008) neither of them passes all the tests.

You can find the .zip here. (source included)

Thanks to the guys over at <insert major videogame company> and their (ab)use of hardware timer interrupts, some of the E3 2005 demos were getting rather sluggish performance in Dualis. Naturally, I could not let this stand! So I rethought my method of keeping the two CPUs of the DS in sync, and managed to get quite a nice boost for a couple of demos (click the images to view in full size).

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