nesdev.com

Many thanks for the quick reply. Just to check, taking it to ground would be sufficient, for a couple of seconds? Or something more advanced needed to replicate the original reset switch? About 1/10th of a second. Maybe less? Don't need more (but more is also safe). Looking at the schematics and tr...

Seems like a great time to learn how to use an emulator with a debugger, then :p

For it to be two-sided, I imagine it would need to be much thinner than a normal cartridge, since the card-edge is in the back part of the shell. ... ok, now I'm thinking about the feasibility of stuffing 4 games in one card. What about Fairchild Channel F? It looks like it's single-sided with 22 p...

Following another thread around a similar sounding problem, I looked at testing M2 and A0, and I have nothing on either pin. I'm having to make do with a 24MHz logic analyser, and if I try this on the CPU-CLK pin I at least get a measurement, but its 2.6MHz - suspiciously out by 10x but I suspect b...

The majority of US NESes have revision G or H PPUs, and they have a specific bug that some games rely on.

Oh, huh. I was incorrectly under the impression that those were SD cards mechanically.

The ones I know of: Sega My Card (SMS, SG-1000, SC-3000) HuCard ("TurboChip") (PC Engine / TurboGrafx) Game Boy, Game Boy Advance - with shrouding Nintendo DS (and DSi and 3DS) Game Gear - also with shrouding WonderSwan anything that uses SD cards It looks like there were several options for MSX-bas...

Oh, and somebody has PMed a sample github page. I does support http (unlike the usual inaccessible https-only github pages), and ftp seems to work too (at least it's showing a login prompt, and doesn't seem to require the defunct github user interface). Not so bad. I am not sure if it does support ...

The only thing is, on the NES you don't have any layers other than the sprite layer. So the animation could only be as big as a square grouping of all of the sprites. The sprites themselves are the black bars and are 7 pixels thick with 1 pixel being transparent. Have the zoetrope mask move vertica...

Try looking into Sanni's cart reader.

Higan manifests already support this, no need for recompilation.

I believe you have a budget of 64KB total (after any CHR compression). Obviously, consult with someone who's actually in charge instead of going on my memory.

Goose2k wrote: ↑

Fri Jan 15, 2021 2:38 pm

current technical details of the game:
[...]
64KB PRG-ROM + 32 KB CHR-ROM

Just to be paranoid, because this isn't the fun kind of thing to find out later: you're eventually planning on compressing the CHR data so that you only use 64KB total, right?

What nocash said. To wit, software can prevent a bus conflict if it there's another place it can access the same memory. But by using A22 (BA6), there's no way to access only SNES-internal RAM (any place where A23 downto A17 = 7'b0111111 ) without also accessing your hypothetical decoded RAM (any pl...

Obviously the RF modulator itself differs - it has to modulate audio and video to different frequencies for PAL vs NTSC. But the RF switch should be pretty similar.