nesdev.com

I don't see anything wrong there. How about where you write to the mapper register? UNROM has bus conflicts, so normally mapper writes would be done like this:

Yeah, it's the clock going away. Kinda dumb, I don't think this kind of thing is a problem with PICs (they get clocked by the programmer). Adding an oscillator like Hojo_Norem said will fix it, and that's exactly what I did. I program it through the cart edge, but not all the signals fit. I believe ...

A couple other tips, from a quick search. There is a fairly active Facebook group here: https://www.facebook.com/groups/1988269977898284/ maybe there is some info on the model you have. There's also the "nuke it from orbit" approach, I saw that some ported RetroArch to it, but it probably won't work...

What's the size of your DPCM sample(s)? There is always some static code, pretty much has to be for NMI/reset vectors at the very least. I would just bump it up against those, put it at $F800 or whatever is the highest start address it fits in. If you must swap out that bank, it's not a crime to sim...

If I had heard about it, I would have been tempted to order one just for the cool factor of Brad Taylor being involved. That's a lot of tech on there for NROM, but it sounds like simplicity wasn't originally part of the plan. Yeah, GTROM was originally supposed to be for a low-end USB dev cart, that...

I looked at the supposed Pandora website (in Canada) and they insist that you're only buying the hardware and must add your own ROMs. They want to have it both ways, what a crock. Would it be worthwhile to approach the maintainer of the website asking how the publisher of an NES game can add a ROM?...

I looked at the supposed Pandora website (in Canada) and they insist that you're only buying the hardware and must add your own ROMs. They want to have it both ways, what a crock. :roll: Of course the thing is on AliExpress too for a fraction of their listed price, and almost surely it comes with th...

I had not used NESMaker enough to write a fair review of it (and only the initial release version), maybe 3 hours at most, but almost all that time was me looking at the assembly source. I was surprised it didn't come with an example program, and with the documentation being videos, it seemed like i...

Haha, I've done the exact same thing. Had one cart where the screen would get corrupt, thought I looked over the entire board, and put it away. I picked up a long time later and immediately noticed I never soldered the mirroring jumpers.

I think with the pronoun discussion the only aspect of it that worries me, is that I don't want anyone to feel pressured to out themselves as a minority. I wish I could say "it can't happen here", but at some point there's certain to be an extra level of crap that comes along with it. It is unfortun...

NROM (mapper 0): No modifications necessary The modification is a repair in this case, because it sounds like the plating came out of the hole for that pin. I don't have an NROM board handy, but I thought Nintendo usually connected 5V to even the NC pins (maybe I'm remembering wrong though). An unc...

zeroone wrote:What is the point of this type of spam? Is this some way to acquire user names or something?

They make the post, then come pack 2~10 days later and edit spam links into it.

Yeah that same IP address just hit us with like 3 different accounts doing this crap. Ugh. While we're all gathered here, I'm gonna say that A Boy and his Blob is a kick-ass game though. My son liked it too, so I bought the Wii remake/redone sequel of it but neither of us got into it as much as the ...

tepples wrote:Or are free or freeware Verilog simulators fast and accurate enough that one can usefully rely on simulation?

Verilator seems pretty darn good. https://8bitworkshop.com/ is a quick and easy way to try it out. On the platforms, select Hardware / Verilog. Includes audio and video output.

- I've burned a ROM of Soccer downloaded from the Internet and used that on the donor Soccer PCB and this _also_ glitches. Yeah, that's not a good sign then. I've used an older Willem EPROM programmer (V3.5 I think?) in the past without any issues. The only catch was I had to set a jumper to set VC...