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Fantastic Dizzy
Posted: Sun Jul 25, 1999 11:11 am
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Finally managed to open the cartridge. It was a real pain, though, and took me about one hour.
After opening it I tried and played it on a SMS to check if the cartridge was still working (as it was in a bad condition after what I had to make with it). Here are the two sides scans: (I left the plastic of the cartridge so you could see how weird it was to open). Also notice the name of the game is wrote on the ROM chip (!). Can someone identify the three chipsets ? Which is pin 42 ? (from which side do you need to start, and in which direction) Right-click to save the pictures - they are in PNG format. |
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Lin Ke-Fong
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Posted: Sun Jul 25, 1999 6:33 pm |
Let's say: ic1 ic2 ic3 Okay, the big chip with a copyrigh CodeMaster (ic3) is probably the rom. It is proprietary? Well the chip prefix is MS so it's probably manufactured by Mitel or Mosel according to chipdir (www.hitex.com/chipdir). I can't read well the number on the chip so I can't make a search on Mitel's website. ic2 is a TIBPAL16R4-C25 if I am not wrong at looking to the scan. I've found some info on Texas Instrument's website, check this out http://www.ti.com/sc/docs/products/logic/tibpal16r4-25c.html There's a doc on smspower s8-dev which mention that codemaster uses that sort of chip. ic1 is badly scan I can't read a thing on it. Zoop maybe you should give us all the number on all those 3 chips, we can barely see them on the scan.
Me too I wonder how pins are arranged. If somebody can explain that. |
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Chipset Names
Posted: Sun Jul 25, 1999 6:44 pm
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Top Left:
GS 9329 GD 4011B or maybe 40118 (cannot read properly) Top Right: Malaysia 136 320FF (crap logo) TIBPAL16R4-25CN Middle (the ROM): (C)CODEMASTERS FANT-DIZZY MS MSFDBB96 Bottom inscription (not a chip!): (C) Codemasters 1993 S8MSV2-1 (might be SBMSV2-1, but who cares about this one?) |
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Eric
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Posted: Mon Jul 26, 1999 1:55 am |
On normal SMS cartridges, even-numbered pins are on the chip side of the circuit board. Odd-numbered pins are on the reverse side. In other words, when putting the cartridge into an SMS unit, even pins face the front of the unit, odd pins face the back. The even pins DECREASE in value moving from left to right. The left side starts with pin 50 and moves to the right ending with pin 2. Pin 1 is directly behind bin 2, and pin 49 is directly behind pin 50. (i.e., odd-numberd pins INCREASE when moving from left to right.) If we assume (and this is how it looks based on the other pin connections) that even-numbered pins are on the chip side of the circuit board, then based on your scan, pin 42 is NOT CONNECTED to anything. The source of the interrupts must be coming from somewhere else. If you can verify that the chip side of the Codemaster's cartridge faces the front of the SMS unit then the above is true. Interrupts are not coming from the cartridge. I will re-submit to S8-Dev my SMSARCH document with the pin-out listings. It will most likely me in HTML. Zoop, how do you want me to do this (e-mail?) Eric
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Posted: Mon Jul 26, 1999 7:54 pm |
It is true, then. Wow, I'm in a better mood now :)
Yes, please. |
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Eric
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Posted: Mon Jul 26, 1999 10:46 pm |
Since interrupts are not coming from the cartridge, where do you think they are coming from? (In other words, do you have any idea why Codemaster's games do not work?)
I'll re-submit it soon. Eric |
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Posted: Tue Jul 27, 1999 6:45 am |
Might a bad dump, but we didn't figure everything yet. Actually, James did told me about the interrupt problem. |
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