NTRQ custom carts- PREORDERS OPEN! (Page 8 of 8)

So, I've been trying, seemingly in vain up to this point, to wrap my head around shift registers and UARTs. I understand how the NVSRAMs work, and a bank of shift registers would get the job done for addressing, which gets about half of the problem done for doing SRAM backup or programming the cartridge via serial or USB, but the UART is making my head hurt. It's probably more likely I'll use a PIC microcontroller if I'm going to take this route, since most of those have a UART built in. It'd save the problem of sorting out the whole protocol-hardware thing since that's programmed into the PIC. Assuming I can get a decent schematic layed out then I can move on to doing code, which is going to be the hard part, since I have never done much coding and driver coding seems very intimidating.

HOWEVER: I will point out that despite all of this I'm still willing to do NTRQ carts to my previous spec! This new design will take a very long time given my skill level, and most likely I'll be making a programmable NROM flash cartridge before I ever get around to doing MMC1. I have tried reading the NVSRAM's data through my EPROM programmer/reader device and it does work. All you have to do after that is get into a hex editor to change it up into a .SAV file.

In fact, I should probably make another thread for ramblings about new flash cart development, since it's derailing this topic.

Thanks for the interest, but the stuff I mentioned in here is old news. I have a new flash cartridge coming along (slowly, so sloooowly. sorry.) which I hope to eventually make for sale. Unfortunately life has been hell for me lately and I haven't had the time to really work on anything, which makes me very sad. So please stay tuned.

Arfink, do you have a blog or anything following the progress of this cartridge?

Hrm, I might consider firing up me old blog... I'll have to see. As for PR8 carts, that will have to happen eventually I think. I just haven't done the needed work to get that going yet.