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PostPosted: Wed Oct 11, 2017 9:10 pm 
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lidnariq wrote:
You ... could try this?

cpu_write(d, 0xF800 | (i & 31) | ((i << 4) & 0x200) | (i << 2) & 0x100), i);

There's this problem that iNES only really handles the notion of contiguous memory. However, that assumption isn't true for either the known mapper 235 hardware, and is also unlikely for yours.

The known mapper 235 hardware has only ROMs #s "0" and "2", but the iNES dump stores them contiguously. So we can try doing the same reordering—the above line will dump the ROMs in the order of 0,2,1,3 ...

You could also PM me the image you have and I can tell you if the dump worked at all.


Hummm, no chance.

Any ideas? I am open to try anything ! I will do some search also on my side.


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PostPosted: Wed Oct 11, 2017 9:14 pm 
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Location: Seattle
One first difficulty:
* This board has a diode that detects when user is pressing the reset button, and changes what bank is present at that time. I don't know if the Kazzo correctly drives its outputs to keep this from getting in the way, but if it doesn't, then modifying the board to support this will be required.

Other than that, there's basically two ways forward:

* Actually trace the connectivity of the parts on the board. Go back to what I said earlier, and use a multimeter or continuity meter to figure out what connects to what. I can write a Kazoo script for whatever that turns out to be.

* Send someone the first 32 KiB dump that you got, which is almost certainly the menu. It is likely possible to deduce what hardware the menu expects is present based on the contents.


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PostPosted: Fri Oct 13, 2017 6:06 am 
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lidnariq wrote:
One first difficulty:
* This board has a diode that detects when user is pressing the reset button, and changes what bank is present at that time. I don't know if the Kazzo correctly drives its outputs to keep this from getting in the way, but if it doesn't, then modifying the board to support this will be required.

Other than that, there's basically two ways forward:

* Actually trace the connectivity of the parts on the board. Go back to what I said earlier, and use a multimeter or continuity meter to figure out what connects to what. I can write a Kazoo script for whatever that turns out to be.

* Send someone the first 32 KiB dump that you got, which is almost certainly the menu. It is likely possible to deduce what hardware the menu expects is present based on the contents.

Will do. I will try to identify which pin goes to which pin and which chip.

I seems I have the same PCB than the 1001-in-1 multicart : http://justinpaulin.com/tag/pirate-carts/


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PostPosted: Sat Oct 14, 2017 12:01 pm 
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https://forums.nesdev.com/viewtopic.php?f=9&t=9866


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PostPosted: Sat Oct 14, 2017 12:08 pm 
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Hm, well, then we could try
cpu_write(d, 0xFC00 | (i & 31) | ((i << 4) & 0x200) | ((i << 2) & 0x100), i);


Nevermind, toggling the 0x400s bit wouldn't help; only the nametable modes change between krzsiobal's board and m235

It's so very close to m235 but just enough different... there may not be a mapper for it.


Last edited by lidnariq on Sat Oct 14, 2017 5:34 pm, edited 1 time in total.

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PostPosted: Sat Oct 14, 2017 4:55 pm 
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labatt24 wrote:
Dwedit wrote:
The real question is what actual games are on it?

It's a 700-in-1 special games exactly like the 260-in-1.


Does the cartridge has this label?

Image

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PostPosted: Mon Oct 16, 2017 5:12 am 
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krzysiobal wrote:
https://forums.nesdev.com/viewtopic.php?f=9&t=9866

Hummmm, it's pretty much the same cart !


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PostPosted: Mon Oct 16, 2017 5:14 am 
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MWK wrote:
labatt24 wrote:
Dwedit wrote:
The real question is what actual games are on it?

It's a 700-in-1 special games exactly like the 260-in-1.


Does the cartridge has this label?

Image

Nope, I don't have the original case. 15 years ago, I remember we changed the case because the original was broken (threw it on the floor by accident).


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PostPosted: Mon Oct 16, 2017 8:10 am 
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Location: NE Indiana, USA (NTSC)
labatt24 wrote:
15 years ago, I remember we changed [a pirate multicart's] case because the original was broken (threw it on the floor by accident).

I guess that's one way to tell a pirate cart: Official Game Paks are Tonka Tough.


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PostPosted: Mon Oct 16, 2017 11:29 am 
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Location: Seattle
Since the m235 earlier dumper script should have worked to produce an accurate (if non functional) image, the only real question is whether you got a valid dump.

If you have a hex editor or similar, you could check if the entire file is the same 16 KiB repeated over and over.

If you don't have a hex editor, you could try just compressing the resultant 4 MiB image using zip or 7zip or rar or something. If the result is tiny (like, 16 KiB-ish) then that also indicates that the file contains a gazillion repeats of the same data.

If the entire file indicates the file is the same repeated 16 KiB over and over, then you'll either need to temporarily disable the reset detection circuit, or maybe there's a way to tell Kazoo/Anago/Unagi to drive M2.

We still would need to figure out how to encapsulate this image; with multiple noncontiguous ROMs it's a particularly bad mismatch to the iNES format.


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