nesdev.org

It might have been conceivable based on half-remembered past insinuations about implementing a subset of CopyNES in the mod. CopyNES includes a 6502 step debugger. The portion of the CopyNES that is not included in the HDMI nes mod, is the Step debugger, and NSF playback. This is mainly due to the ...

Just poked into the copynes lite bios, contained within the update, and see that none of the code space optimizations made it in. It seems to be the original bios. At least my code changes that made vram/wram testing non-destructive made it in.

One thing to do, after the scans, is to etch away the copper layers on the top and bottom, then shine a light through the board. If there is more than 2 layers, the copper in the middle layers will block the light where ever it is present. On the other hand, this will also confirm it being 2 layers,...

1. Correct on both counts. 2. Battle Kid 2 is not using the flash at all. In fact, the only part of the board it is using, in the oversize UxROM bit. I have however created a hack that takes advantage of the flash capability. Taking advantage of it on the real cart, requires modding it though, (spec...

Submitted that, in modified to mapper 31 form to the fceux svn. Also submitted a patch of my own for the mapper to bizhawk as well.

FYI latest MESS (from svn repo) supports emulation of this PCB, even if our APU emulation is not 100% accurate yet (but recent progresses on the MAME core will soon allow for some improvements) I have followed your choice of mapper 30, of course, since it does not appear to be used... You might wan...

Really, the Break Instuction shared the same vector as TCall 0, with the diffference that you had to use RTI rather than RET to return. I bet all the other interrupts shared vectors with the TCall instructions, on the processors that supported these interrupts. Really wish they would have at least k...

NSF (and NSFE) ripped. https://dl.dropboxusercontent.com/u/207 ... mi_nsf.zip

For those that prefer an nsfe, here it is. (Fully tagged, and Timed. Sivak had me rip the nsf back around June 2012, from a music only rom.)

Also, Sivak reused a song from his album, Enter the Draconian. The song is Glacial Caverns.

It seems links to digikey parts can and do expire. You need to post an actual digikey part number, that can be searched for.

jims cool wrote:
after release in production runs it will cost about $50 for 100 chips!
i'm not setting a release date but it will be soon

In other words, you are busting up bunnyboy's monopoly on his $4 a chip nes ciclone chips.

Simplified the MAD1/MAD1A and the MADR truth logic. /* ------ MAD-1 / MAD-1A Truth Logic ------- */ OUT4 = (!A0 && !MODE) || _ROM || !_RESET; OUT0 = OUT4 || A2; OUT1 = OUT4 || !A2; OUT2 = !((A0 && A1 && A2 && !A3 && _ROM && MODE) || (!A0 && A1 ...

> Note, / replaced with _, due to the way variable names in C work. Now it looks even more confusing... the !&&|| stuff already confused me a lot. I guess it means NOT, AND, OR, but I never figured out why one would replace that words by punctuation marks. This whole NOT, AND, OR, with !&am...

And the corrected Truth logic for MAD-R. :) OUT0 = ((!(!A2 && !A3) && !_ROM && !MODE) || _ROM || (A2 && !_ROM && MODE && _RESET) || !_RESET) && (Vbat < Vcc); OUT1 = ((!(A2 && !A3) && !_ROM && !MODE) || _ROM || (!A2 &...

Okay, tested my MAD1 Truth table logic, and found a bug in it. Here are the correct Truth Tables. :) OUT0 = ((((!A0 && !A2) || A2) && !_ROM && !MODE && _RESET) || _ROM || (A2 && !_ROM && MODE && _RESET) || !_RESET) && (Vbat < Vcc); OUT1...