nesdev.org

PW1.1 still had the title glitch. There's also a minor 1.2 update to both PW and PR, but I'm not sure if SePH and Euclid consider the PW version an official release. Both of them still show v1.1 on the bed sign.

http://www.zeldix.net/t824-zelda3-paral ... model-v1-2

I need to redo the PCB layout on my serial port adapter (I made the original several years ago and my routing is pretty silly in a few places), but I should definitely get around to that now that there's a real use for it...

You either need to mirror the ROM or else tie the highest address line on the TSOP chip to Gnd. Otherwise, a floating address pin will cause the ROM to randomly switch between the upper and lower halves of the ROM, and you've only programmed the lower half. If you mirror the ROM though, then it will...

Do your bad boards have the MAD-1 decoder or the '139? If they're '139 boards, there are several passive components (resistors and diodes) that could have failed. If it's a MAD-1 board, bad solder joints would be my best guess. Other than that, try resetting the games without turning off the power, ...

sanni is correct. I've used that exact pinout to build a Kamek's Revenge cart out of a YI donor. Also, this thread probably belongs in the repro section.

Trying to write a different value didn't work as expected, the result got ANDed with the old value (I was thinking that the chip would automatically erase/rewrite the written page, which should works as so on modern FLASH chips, but the 29F1601 can apparently only change bits from 1 to 0). This is ...

That doesn't mean much without the /OE and /WE signals. For all we know, that's just the ROM data being read by the console.

My guess is that they hooked it up to that device just as a PC interface to send arbitrary commands to the cart, then they have the probes set up to log the output result of the commands. Chances are, the SNES cart has an unlock sequence similar to the GB one, and you could try to bruteforce it by s...

Microchip has 5V flash ROM's up to 4Mbit, with free samples available. Should be plenty large enough for a test cart. http://www.microchip.com/wwwproducts/De ... SST39SF040

Only 100 erases? Wow, I didn't realize it was that low. I had a university PLD's course where we used a MAX7000 chip (I think it was the 7064), and we used it all term. I'll bet mine is pretty much used up at this point. Bummer, I made a nice PCB version of the class dev board and everything...

My guess would be to minimize the effect of the transient current spike into the 7805 at the instant you flip the power switch.

byuu, the bypass caps will be ceramic, so don't worry too much there. They're pretty much required, though.

> I'll throw my hat in the ring for dumping if other options fall through. d4s already dumped it. God, it's so frightening that this was 3.5 years ago. It feels like the previous page is only a year old to me. What the what? I swear this was like the 3rd post when I replied to it, didn't mean to ne...

byuu, even if you just had a working ROM that I could throw onto a boot cart, just so I could confirm that my firmware was performing as expected, that would at least be enough to throw something together. I might even try to build an even smaller version out of my favorite USB PIC, the PIC16F1455, ...

Speaking of that serial cable, I can still totally build that simplified version we discussed way back whenever that was. I just don't have the software side of things to test out the final result. If you send me your boot ROM and PC-side software, I'd be willing to give it a shot...