How about a new calcnet game?
A Genesis emu for Nspires

The sega genesis had both a 7Mhz 68000 CPU and a 3,6Mhz z80 coprocessor (if I recal the cpu speeds correctly.) I think it's more difficult to emulate two CPU clocked at different speeds. I think they communicate asynchonously, so the emulator has to be multithreaded, yet the threads have to be able to swap out information asynchronously. If the timing is not right this can lead to inaccurate emulation.
The genesis and the Nspire have the same resolution: It's 320x240 at most in ntsc regions.

Can you guys give me a name for this song?
http://updo.nl/file/91bbaf77.mp3
Genre: Chiprock
Sounds used:
Sega Genesis VSTI,
AY PSG VSTI,
FM synthesis VSTI,
Drum machine VSTI

The music engine like the sound effects engine will be interrupt driven, so it's really accurate. No slowdowns in music or framerate. I could take a string of data and put it in an appvar. This engine will play a string of notes of any length. At the moment every note takes up 1 byte of data, so with 3 channels the size of a song is N*3. The song you just heard is just 192 bytes long and you heard it looped twice.

When I implement the instruments there is one extra byte per note required. When I implement effects such as vibrato, arpeggio and sweeps it's gonna be 3 bytes per note.
note-instrument-sfx
nn - ii - xy

Happened to me a lot. Try a graphlink cable instead if you have one. Swap out the usb plugs a couple of times and see what it does.

Some of my game cartridges have a letter on them. B means PAL B, P also means PAL. I figure A or N means ntsc. I do not own any ntsc games though.
After I bought yars revenge I saw it in a bin somewhere else for €1 >.<

Edit: it does the sound quite well actually. Except for one stage in megamanz2 the echo sounds a bit off. I looked inside and I cannot find an obvious way to make this thing output ntsc.

I went to a retro videogame con. Look what I brought back home

Quick loot pic.

List:

Games:
-Atari2600 games:
--Jars' revenge €3
--Demon attack €4
-NES games:
--Kirby €10
--Megaman2 €15
--Mario bros and duckhunt (I needed a copy with a nicer label) €4
-Snes games:
--Fzero
-Megadrive games:
--Sonic (the original!) €4
-Philips videopac games:
--9: Programmer (with large and detailed orange manual!)

Hardware:
-N64 €2,50 + jumperpack €2 + powersupply €6 (yep... I bought parts and made an n64 for €10,50 and it works like a charm)
-NES clone €8,50 (has nicer video output than a real nes and it plays smoother because the CPU is clocked faster. If only I could mod it to 60Hz)
-4x Commodore 64 reset button. €2 (I want the userport connectors!)

Freebies!
-Philips MSX1 (it was part of a deal with someone I know from atariage.com. I sent him parts so he could repair his commodore 64!)
-3Gb HDD
-6pack (6-in-1) with manual (woohoo) €0 (got it thrown in as a bonus)

Yeah I got 19 2600 games with my console and a lot of them were boxed copies. The boxes look like arse, but the black label cartridges are in mint condition.