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Originally Posted By seanriddle
I guess that's the TI-57- that's the patent referenced on the R/S web page.

It looks like each of the TI57 patents (4078251 4079459 4100600 4107781 4125901 4164037) has its own set of typos. I'll put together a combo file by comparing them and taking the majority vote.

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Originally Posted By seanriddle
Since MP3404 and MP3405 are both from Ralph Baer games, it's possible MP3403 is, too.

Bah- Merlin (MP3404) isn't a Ralph Baer game, Simon (MP3226) is. Sorry. Merlin was from Robert and Holly Doyle, who also did Code Name: Sector and Stop Thief.

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Touch & Tell and Language Tutor patents with src code are:
US4403965_touch&tell.pdf
US4631748_language_translator.pdf

Thanks for CD2708 smile

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Originally Posted By seanriddle

Let me know if you need any other areas.

Can you get the main rom of the tmc0271? I know there's a chip out of the corner of it, but 85% of it is still readable, and that would be enough for me to have a good confidence that it matches either the patent or parts of it.

LN


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IMO it's a better use of time to extract it on a later successful decap.
Sean if you could use a free xmas bonus paypal donation for all these purchases, don't be humble and gimme paypal address laugh

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Originally Posted By Lord Nightmare
Originally Posted By seanriddle

Let me know if you need any other areas.

Can you get the main rom of the tmc0271? I know there's a chip out of the corner of it, but 85% of it is still readable, and that would be enough for me to have a good confidence that it matches either the patent or parts of it.

LN

Yeah, I can start on that. I will be out for a while at the top of the month for work, but I'll get started.

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Originally Posted By hap
IMO it's a better use of time to extract it on a later successful decap.
Sean if you could use a free xmas bonus paypal donation for all these purchases, don't be humble and gimme paypal address laugh

Hey, thanks. No problem, I've got a little budget for that stuff. I generally look for cheap stuff anyway.

I uploaded the MN1400 die shot from Computer Perfection: www.seanriddle.com/mn1400.html
It turned out pretty well. ROM upper left, RAM upper right, instruction PLA lower middle, output PLA lower right. The ROM bits are more subtle than on the TMS1x00 chips, but easier to see than the F8 PSUs. The 1KB ROM array has 128 columns, which I'm guessing are 16 pages of 8 bits, while each of the 64 rows is selected by the 8-bit program counter, using the ROM word decoder between the ROM and RAM arrays. I don't have a ROM dump from a patent or an electronic dump for the chip, so it'll be interesting to figure out the bit arrangement.

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Ok, definitely not a 1:1 TMS1xxx clone then. (or did I already say that before?)

Coleco Amaze-A-Tron is running fine in MESS. You really need a board+playing pieces to play though. I fixed 1 bad bit before writing the driver: amazeatronraw.bin offset $596, change $1A to $9A.

Right now I'm tinkering with MP3403. We're in luck: it has a 1-bit speaker on R9 and plays short jingles when I press random buttons. My 1st guess is a horse racing game.

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Thanks for the bit. I changed it in my files.

Cool detective work on MP3403! Do you have any samples of the jingles? I don't remember any horse racing games off the top of my head. Now how about that M32018 TMS1000 from Visual 6502?

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That one I have no idea. Kevtris had at least two of them, he sent one to visual6502 and I have the other one intact here, though no means of doing meaningful tests to it right now. (I can return it to Kevtris if you have any ideas...)

LN


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