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After adding some pullups to the L pins, I have what looks like a good and proper COP411 dump now. Disassembly shows what looks like proper code, setting up RAM and ports and then getting stuck at a loop on the port pin that connects to the other CPU.

Then code after that is reading the L port to get the command from the CPU and it pings it to say it received it and then it does god knows what to generate the audio. the end!

Tonight's goal is to dump the ms pac CPU (easy/fast) and then play around a bit with the M58846 mitsubishi chip from frogger.



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I went to the Louisville Arcade Expo Saturday, and picked up a Sears Team Play Basketball handheld. handheldmuseum.com has a picture of a very similar game, though the art on mine is a bit different. It says it's licensed from Coleco Head To Head Basketball.

http://www.handheldmuseum.com/Sears/TPBasketball.htm

http://www.handheldmuseum.com/Coleco/H2HBasketB.htm

It's easy to open up. The MCU is a TMS1000:

TMS1000NLL E
MP3320A
WE 8018
SINGAPORE

The PCB also says:

COLECO
(C) 1979
73796 / 73803 REV E


Also, I got to play an Atari Video Pinball Model C-380, which is a dedicated console. This one wasn't for sale, but I definitely found it more interesting than your typical Pong system. Pong Story describes it as using "possibly a microcontroller" labelled C011500-1.

http://www.pong-story.com/atpong2.htm

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Originally Posted By hap
Sean: on Entex Baseball 3, is it possible without the MCU to measure the output frequency of the RC circuit? (with and without the PRO switch enabled)

I don't think so, but I've got another TMS1100 that I could connect the same cap and resistors to and measure the clock on it.

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I've got the white model of Atari Video Pinball, but I've never opened it up. I'll take a look at it.

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Ok, Entex Baseball 3 is working in MESS. I'll update the notes if you worked out how to measure its osc freq.

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I've tried recently to contact people who previously posted about wanting to get microcontrollers dumped. I just heard back from mellery, and I believe the only undumped item he currently has is the Milton Bradley Omega Virus electronic board game, which he says uses a "TI 3253ACT / CSM11161AN (custom chip?)". Any interest in this one?

http://en.wikipedia.org/wiki/Omega_Virus

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*YES*. That and the 1989 MB electronic talking battleship use TSP50Cxx 8-bit micros (there are TWO speech synth devices which do too, one being the 1989/1990 version of the appleII ECHOII, as well as at least one vtech product). I was looking to (but did not bid) get an omega virus board off ebay just yesterday. I own an electronic talking battleship but was looking to nab a cheap one as well since mine is missing the box.

EDIT: http://q7.neurotica.com/Oldtech/Apple/EchoII-1L.jpg is the 1989/1990 echoII, tsp50cxx mcu is at U6.

there is an even later 1991 version which also uses it which has a capacitor mounted on top of the mcu due to a board layout issue?

LN

Last edited by Lord Nightmare; 03/11/15 06:23 AM.

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I played around a bit more with that M58846 tonight and I believe I figured out how to make it dump its ROM. Pin 20 (CnVSS says the data sheet) seems to be the test pin.

if you disconnect this pin, it will pulse every instruction cycle, and reading some of the older docs they have a 'T4' timing output pin. This appears to be T4.

When the pin is pulled low, the chip enters a test mode where D5 high causes what I believe is the program counter to be emitted on D1, 3, 4, 6, 7, 9, and 10. A 7 bit binary count appears here, incrementing once per instruction cycle. The output pulses high in time with T4 for a "1" and stays low for a 0.

Pulling pin 20 to half supply puts it into what appears to be a ROM dump mode. During the time when T4 is low, the chip appears to accept a program counter value on 11 of the D lines, and when T4 is high it outputs the data on D1 and 3-10. 9 data bits, just like the ROM width.


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I don't know if this belongs here, per se...but I figured I'd ask since I just came across it the other day and have been following this thread with some interest. Is there any interest in a Dungeons & Dragons Electronic Labyrinth game? I actually have no idea what's inside of it, though since it's presumably fairly primitive. I can probably pop it open and look at chips if someone wants.

They don't seem to be terribly sought after and mine's in less than pristine condition, and I'm going through another wave of trying to shed random crap I've over-accumulated, so...

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Originally Posted By Sharkpuncher
I don't know if this belongs here, per se...but I figured I'd ask since I just came across it the other day and have been following this thread with some interest. Is there any interest in a Dungeons & Dragons Electronic Labyrinth game? I actually have no idea what's inside of it, though since it's presumably fairly primitive. I can probably pop it open and look at chips if someone wants.




I have a good bet it's probably a TMS1xxx in there, going by the age. Checking out on ebay, it looks like it runs on a single 9V so that reenforces the TMS1xxx theory.

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