the "Gameboy Cart Tool" is working very well, it's easy to use. I managed to get it work on Nexus 7, not on Nexus 4. Anyway, I could transfer my LSDJ projects on the cart so I can work and render it on the GB. First time LSDJ crashed (sort of "kernel panic" or "BSOD") and it corrupted some data, then I flashed it again and it seems to be ok so far. I guess we need to make several backup with LSDJ to be sure it is safe...
I hope you'll manage to find a new FPGA or a way to make this cart work again!
]]>I'm thinking of replacing the FPGA with a GBC MBC. You'll only get the one bank (Unless I add a manual bank switch...) but it's better than a dead cart!
While I'm at it, I could add a second SRAM IC, give the cart a second bank of ram too.
]]>OK, checked all voltage regulators and all within spec. Swapped out the Flash IC with a known good one, Fault remains (Though I did pull the page1+2 ROM's off the original flash). Swapped out the MBC (FPGA) and moved the fault to my cart and restored functionality in yours. Confirmed dead FPGA (Part number - SiliconBlue ICE65L-04F-L)
These are available but unfortunately the ROM within is write only. Has anyone come across the VHDL or binary for this FPGA?
Or does anyone have a dead cart they would like to donate?
I think the best bet would be to ask on the hkems board. Maybe they'd give you a binary... or they might just send a replacement.
]]>These are available but unfortunately the ROM within is write only. Has anyone come across the VHDL or binary for this FPGA?
Or does anyone have a dead cart they would like to donate?
]]>I'm not sure my android devices support OTG but I'll have a look anyway! Thanks a lot for pointing it out.
If you want to find out if your phone supports OTG, you can install the app and try "Detect USB device" from the menu (even without a USB device connected).
If you don't see the message "Sorry your device does not appear to support usb host." then it probably supports it 
Here's a screenshot of the message:
while we're talking about this, I've ordered one of those EMS 64M card. I'm using linux and I've seen the unofficial linux driver using usblib. I've tried to compile it but it didn't work. Any tips about this? Are there others, can we use wine?
If you have an android device, the app "Gameboy Cart Tool" is the current best method for reading/writing cartridges on modern hardware. I'm not sure if it works under emulation, however, as it requires OTG.
]]>You might be onto something there Egr, Maybe an IC or discrete on the board has gone bad and is shorting something. The Led is driven by a simple SR latch inside the FPGA/CPLD. Might explain why the Joey isnt starting either, dead short on the 5v line.
I'm gonna send it to you today; if it's something you can fix let me know and I'll pay for any replacement components.
]]>Update: I had a look inside with a magnifying glass and light; couldn't see anything glaringly obvious, apart from pins 6 & 7 on the chip with "PL8810" printed on it being soldered together (but I *think* I can see them connected together in this photo I found: https://www.flickr.com/photos/gameboyge … otostream/ so I think it's supposed to be like that).
The LED lights dimly every time I try it in either gameboy. I've tried it without the front cover, without SRAM battery, and tried taking the SRAM battery out for 10mins and re-seating it, with no luck.
Does the led light up brightly when you have the cart plugged into your computer and choose Page 2 in the software? I'm kinda fixated on the page switching since that seems to be a very weak point in these carts. There was a thread on here about removing a certain capacitor so that your cart would always be locked into Page 1 but I cant find it. That might be worth looking into if you can find the info.
]]>The LED lights dimly every time I try it in either gameboy. I've tried it without the front cover, without SRAM battery, and tried taking the SRAM battery out for 10mins and re-seating it, with no luck.
]]>Thanks!
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