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Originally Posted By seanriddle
When I decapped Electronic Talking Battleship, the die got stuck in the top plastic and I toasted it pretty badly trying to get it free. Unfortunately, Whink didn't clean it up very well. The ROM bits look like they are possibly a little small for me to read anyway. It looks like 8K of ROM. Here are a couple of 5Kx5K GIMP files:
www.seanriddle.com/electalkbshipmetal.xcf

www.seanriddle.com/electalkbshipacid.xcf


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Originally Posted By hap
sean: what hw revision Big Trak is yours? Or will you post that in a hw/pinout info txt later?

The PCB is Rev D; the serial # on the bottom is 1260863. The board is hard-wired into the unit, so it's a little tough to trace the wiring. I want to sub in a little PIC processor for the TMS1000 I pulled, so I don't want to cut the wires. The link I posted has lots of good info, including schematics. So far, the things I have checked match up with his info.

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Well, now we know exactly what's in electronic talking battleship: a TI TSP50C10A

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Yeah, that bigtrak site looks informative enough for making emulation happen. =)

If someone wants to add it now, the romdump is confirmed and here are the PLA files:
tms1000_bigtrak_opla.pla: http://pastebin.com/Fpkv235j
tms1000_bigtrak_mpla.pla: http://pastebin.com/Vs7F6UyL
If not, I can add it later, in a week or so.

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There's a great doc on the TSP50C10A: http://www.ti.com/lit/ml/spss011d/spss011d.pdf

But I didn't see any obvious way to electronically dump the ROM contents.

Datamath.org says the chip is also in the Super Speak and Math.

If there's no way to electronically dump the ROM, I can pick up another Battleship and try decapping again. But there's no guarantee that I'll be able to read the bits, or if I can, that we can figure out the bit order.

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I'm almost sure there IS a way to electronically dump the rom; the trick is we have to find it from the decap.

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The doc mentions "test code" at $1FE0-1FFF, which is the top of the ROM address space for the '10. Reset jumps to $0000, but maybe certain inputs cause a jump to the test code instead?

I scanned the docs for hints (the TMS1xxx data sheets mention things like "don't drive K1-K4 within 6 clocks of reset", or "expect R0 to output unexpectedly when device is reset"), but didn't notice any.

I did get confused about the D/A options; in one place it says the '10 only has options 2 and 3, but the pin assignments show DA2, which is option 1. The Battleship PCB looks like it uses the option 1 4-transistor amplifier.

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That warning about k1-k4 6 clocks from reset sounds like an invitation for probing.

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Another day, another game. This time it's frisky tom.

http://blog.kevtris.org/blogfiles/Handhelds/Bandai%20Frisky%20Tom/

This VFD Was a huge pain because each glyph is different pretty much.

Down to 10 or so left.

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