Home Page Forums MAME MAME TMS-09xx/1xxx thread (was New Dumps)

DKJR: It doesn't have any music. It's a pretty simple game, so it should fit in SM510 ROM size. It could also be the SM500 derivative that were in the first generation Game&Watch games(I still don't know the exact model of that)

I got the Toytronic football games running. Looking at the piezo circuit, was there anything special with the sound? Maybe some kind of volume gating effect?

The piezo on the Toytronic FB game (http://www.seanriddle.com/toytronicfb.txt) is hooked up like this: RC6 is tied to VDD with a 3.3K resistor, and also goes to a 0.04uF disc cap. The other end of the cap is connected to the cathode of a diode and to a transistor's base. The diode's anode and the transistor's emitter go to VSS. The transistor's cathode goes to a transformer; the other side of the coil goes to VDD. One side of the 2nd coil goes to VSS and the other side to the piezo. The other piezo connection goes to VSS.

The other football game (http://www.seanriddle.com/football.txt) has a simpler piezo circuit. RC6 is tied to VDD with a 2.7K resistor, and also connects to a transistor's base with another 2.7K resistor. The transistor's emitter goes to VSS, and the collector goes to the piezo and to a 10K resistor. The resistor goes to the other piezo connection, a diode's cathode and a 4.7uF electrolytic cap's positive side. The diode's anode goes to VDD and the cap's negative goes to VSS.

I uploaded short vids of those games:

Thanks. I'm glad to say it looks like there are no unexpected issues with the emulation. I just had to tweak the MCU freq a bit. Also, the fact that the player led in the basketball game should be brighter, is a common(not unexpected) problem with these led handhelds.

*edit* New MAME will be out next wednesday as usual, with plenty new handhelds this time. If I go by youtube/google, the most known ones are Atari Touch Me, and GAF Melody Madness.
and a cheesy commercial of MB Plus One

Regarding one of the less-well-documented TMS1000 peripherals, the TMS1025 I/O expander is also used in pairs on several Universal PCBs. It might help to know that, according to the available datasheets, CE (pin 4) is tied to Vss and MS (pin 5) and STD (pin 6) are tied to Vdd on both chips; at least one of these must place them in read mode, as S0-S2 (pins 35-37) are the only control inputs that get toggled.

I bought a couple of TMS1024s and decapped one; I can connect the other to a PIC and test out CE, MS and STD.

Tomy Break Up uses a TMS1025 and has CE tied to VDD and MS tied to VSS. STD is connected to one of the MCU's outputs. It has some LED issues that more info might help resolve.

I think the issue with Tomy Breakup is more likely a led interpolation problem than a TMS1025 emulation problem. The 'unwanted' leds are strobed very shortly, basically it's the same category problem as leds that need to appear brighter (basketball game i mentioned above, football games, etc)

Ah, gotcha. I'll still test the TMS1024 and see if there's anything to learn.

I bought a Simon with an MP3300. It'll be interesting to see what's different from the MP3226.

I've also got a Conic Electronic IQ coming.

Nice, I had that in my notes as "Estrela Genius"(Brazilian version of Simon). Is there any revision information on the PCB or casing?

The auction was just for the PCB, no case. I probably won't receive it for a week or so. I paid more than I wanted to, but it was hard to pass up when I saw the code on the chip.

Conic IQ came today:
TMS1000NLL
MP0908
MBSL 8005
SINGAPORE