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#110734 - 09/05/17 05:06 PM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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Cool! I'll try to finish up Batman Forever this week.

#110763 - 09/10/17 09:16 AM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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#110765 - 09/10/17 02:14 PM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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That sound setup looks similar to Tiger Sonic, where one of the S pins is used for sound effects(at higher volume than music)
What are the resistor values on S3 and R here?

#110767 - 09/10/17 04:26 PM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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They are both 10K.

#110769 - 09/10/17 10:12 PM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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I de-globbed the die in my 1982 Casio CA-851 calculator watch: http://seanriddledecap.blogspot.com/2017/09/blog-post_26.html

I was hopeful that it would be a Sharp MCU, but it's NEC, labeled D1881. I can't find a datasheet for it, and I can't see the ROM bits.

The watch included a simple game where digits moved across the screen and you had to destroy them by incrementing an "aiming" digit to match one of them, then firing.

#110771 - 09/11/17 01:14 AM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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Jarvik7 Offline
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Nagoya, Japan
Originally Posted by seanriddle
I de-globbed the die in my 1982 Casio CA-851 calculator watch: http://seanriddledecap.blogspot.com/2017/09/blog-post_26.html

I was hopeful that it would be a Sharp MCU, but it's NEC, labeled D1881. I can't find a datasheet for it, and I can't see the ROM bits.

The watch included a simple game where digits moved across the screen and you had to destroy them by incrementing an "aiming" digit to match one of them, then firing.


If MAME is going to start emulating watches now, Timex Datalink is the obvious target! I have one somewhere I can part with.

#110772 - 09/11/17 02:29 AM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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A Timex FAQ for older Datalinks says this:

Our developers have indicated that WristApp programming requires an extensive knowledge of the assembly language for the Motorola 6805 processor. A 6805 emulator is also required to debug the assembly language code. In addition to experience programming in 6805 assembly language and the requisite 6805 emulator, WristApp and Soundtheme development requires an intimate knowledge of the Timex watch architecture.

Some of the USB Datalinks use the 8-Bit SEIKO EPSON S1C88349
http://www.rayslogic.com/Software/TimexUSB/TimexUSB.htm

Last edited by seanriddle; 09/11/17 02:32 AM.
#110775 - 09/11/17 12:15 PM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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6805 is no problem for MAME, although dumping it could be interesting.

#110776 - 09/11/17 03:37 PM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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Stiletto Offline
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Shit, I still have a few calculator watches. Emulating them would be an exceptionally nerdy thing I'd never thought about! laugh

#110777 - 09/11/17 05:24 PM Re: TMS-09xx/1xxx thread (was New Dumps) [Re: seanriddle]  
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seanriddle Offline
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I electronically dumped the 6805 in Milton, although one in a watch would likely be globbed and the required pins may not be easily available. I also decapped the Milton chip and figured out how the bits are arranged on the die, so I could do a visual ROM dump.

http://www.seanriddle.com/mc6805p2.html

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