Finally we found a better name for the snesram and renamed it to ‘QuickDev16 USB’. Final PCB layouts are ready and will be send to china soon. So in about 2 weeks we will have our first PCBs. Confirmed Features: 16 MBit Sram for Rom storage ATmega644 MCU for housekeeping USB connection for ROM upload [...]
Yeah, its working. Have been playing Super Mario Word last night. Did a few tests with different roms. Mainly Lorom, type 0 without save game ram. Was able to run games up to 16bmit. Couldn’t find any 32mbit type 0 games to test the complete ram area. Anyways its working finally. What de did? Resolder [...]
Last night i had a long debug session with Max and we tried to track down the problem with the prototype board.The problem is that some homebrew roms are runinng fine, but most commerical games don’t even start. I can start up the game “Mr. Do”, but it hangs directly at the first intro screen. [...]
Last night we spend atleast 3 hours to track down a little bug in the cpu fuse settings. After running first tests on the hardware we got debug uart and some basic sreg addressing working. Then we started to implement a sram read/write round trip. We found out that we read for all sram cells [...]
These two pictures show the different functional blocks of the prototype design. On the top side you have the MCU and next to it the connector for In-System-Programming and the MMC/SD daughter board. The yellow block marks the usb hardware for emulated software-usb on the mcu, the green block is the ram section. The orange [...]
Finally assembled and the pcb powers up. So iam posting a few more details photos. The boards powers up and the FTDI can be accessed via usb. So tomorrow i gonna meet with max and we will port the old firmware from the mega16 to the mega644. Tomorrow we might have simple usb based uploader [...]
This monday morning the long awaited first prototype PCB arrived from pcb-pool. We had a little UPS problem on friday, so we had to wait till monday to get the PCB. Max just started to solder all the chips, looking forward to get a working usb uploader firmware running till the next weekend. I think [...]
Had a big breakthrough yesterday with our Super Nintendo Snesram project. Got for the first time a commercial game running. This was quite a hard one. Spend a great amount of time debugging the memory uploads routines. I had to add CRC checks to both sides of the hardware. An AVR hosted CRC memory check [...]
I had so much fun finding out how good the Snes9x GX Emulator for the Wii is. I never really got into the Wii hacking scene yet, just keept a little and h following the exploiting status of the wii. So when the Homebrew Channel came out, i installed it. But never really did something [...]
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