Help dumping a pirate

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jpx72
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Help dumping a pirate

Post by jpx72 » Mon Nov 01, 2010 11:21 pm

Hello, I am trying to dump a pirate cartridge that came with a keyboard famiclone, containing some keyboard software and a couple of small games. But the only way I can do this is by reading the ROMs with my eprom reader. I can change the pinout at will (homemade adapter) but I must set a standard eprom type to read. This is the cartridge already with desoldered ROMs:
Image
Image
Notice that the PRG rom was on the left of the first image, and there was a wire connecting cartridge pin59 with CHR pin17 (CHR D5).
This is the pinout so far:

Code: Select all

        PRG
+5V   01   28  +5V
A12   02   27  R/W (pin14)
A7    03   26  VCC
A6    04   25  A8
A5    05   24  A9
A4    06   23  A11
A3    07   22  GND
A2    08   21  A10
A1    09   20  [glob]
A0    10   19  D7
D0    11   18  D6
D1    12   17  D5
D2    13   16  D4
GND   14   15  D3

        CHR
+5V   01   28  +5V
[glob]02   27  /WR (pin47)
A7    03   26  +5V
A6    04   25  A8
A5    05   24  A9
A4    06   23  [glob]
A3    07   22  /RD (pin17)
A2    08   21  [glob]
A1    09   20  A13
A0    10   19  D7
D0    11   18  D6
D1    12   17  D5
D2    13   16  D4
GND   14   15  D3
I tried to read these with standard pinout of the 27C128, 27C256 and 27C512 but the result is always a blank file (FF). So I think I got the pinout wrong and I have to find out the right pinout to read them correctly.
Is it possible that the roms on top of the globs are actually mappers or RAM chips and the globs themselves are the program ROMs?
This is the cart and a screen capture:
Image
Image

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kyuusaku
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Post by kyuusaku » Tue Nov 02, 2010 12:53 am

The mapper is in the glob(s). It needs to be dumped using another method.

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jpx72
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Post by jpx72 » Tue Nov 02, 2010 12:56 am

kyuusaku wrote:It needs to be dumped using another method.
Is it possible to wire cartridge's pins to the programmers socket and dump cartridge like an eprom? (this is my programmer)

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kyuusaku
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Post by kyuusaku » Tue Nov 02, 2010 1:11 am

Nope. The ROM's high address lines are encapsulated in the glob so there isn't really a sure way, even destructively, to dump it externally.

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Jeroen
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Post by Jeroen » Tue Nov 02, 2010 1:32 am

Best option? Get a copynes.

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jpx72
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Post by jpx72 » Tue Nov 02, 2010 1:45 am

Yes, if it wasn't so expensive. It's a shame that the older (parallel port) version isn't available any longer. I need only the PCB (or at least schematics - better than these) and the R6522AP (6522 port chip) of it if somebody has it, the rest I can build/supply myself.

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kyuusaku
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Post by kyuusaku » Tue Nov 02, 2010 3:39 am

Even better/cheaper, you can build a standalone parallel port dumper out of 3 x $0.15 logic chips. One example is the Pasofami reader described in the documentation. (Doubt the proprietary software supports this mapper though.)

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jpx72
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Post by jpx72 » Tue Nov 02, 2010 4:22 am

That is in fact really interresting! What documentation are you talking about? I have other nrom/other mapper pirates that I would like to dump...

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kyuusaku
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Post by kyuusaku » Tue Nov 02, 2010 12:19 pm


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jpx72
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Post by jpx72 » Thu Nov 11, 2010 12:35 am

Ok, I have found a redrawn schematics (pdf) on this site: http://www.emusta.net/fam.html
but as far as I was able to understand from the japanese site, the software is not freeware, and I am not able to program my own dumping soft and also I am not really sure that I can register over at http://www.geocities.jp/pasofami77/ just so easily, and what I'm really afraid, that I wouldn't understand the japanese program after all... Isn't there an english site for this kind of dumper? Thanks

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Memblers
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Post by Memblers » Thu Nov 11, 2010 7:05 am

Why not use a CopyNES? It's about the only option without making your own software/hardware. If it's not a known mapper you will need to reverse-engineer it (or send it to someone who will), and that also pretty much requires a CopyNES or something similar.

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jpx72
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Post by jpx72 » Thu Nov 11, 2010 11:17 am

Yes the CopyNES.. I will buy it someday. But I was looking for some cheaper (DIY) alternative.

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Memblers
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Post by Memblers » Fri Nov 12, 2010 7:47 am

Ah yeah, kevtris used to sell it as a cheap DIY kit. I'm pretty sure he sold them all off though.

I've had one for a long time, and the parallel port compatibility can be a huge pain. I've had CopyNES for a very long time, and on the LPT version if it doesn't like your computer's LPT port (as it has with almost all of my machines), you're just screwed - there's nothing you can do. I even bought LPT expansion cards, didn't help. Took it to kevtris' house, and it always worked on his machine, heh. So for that reason alone, the USB version is pretty good.

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Post by thefox » Fri Nov 12, 2010 8:36 am

Memblers wrote:Ah yeah, kevtris used to sell it as a cheap DIY kit. I'm pretty sure he sold them all off though.
I have one unused kit in case somebody wants to buy it, never got around to building it and I don't think I ever will because I wouldn't have much use for it anymore. Not sure if it's worth it to ship it from here (Finland) though.

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jpx72
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Post by jpx72 » Sat Nov 13, 2010 3:02 am

PM Sent!

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