Search found 10075 matches

by lidnariq
Mon Jan 18, 2021 3:42 pm
Forum: NES Hardware and Flash Equipment
Topic: White screen on new opentendo build, no signal on M2
Replies: 3
Views: 60

Re: White screen on new opentendo build, no signal on M2

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...
by lidnariq
Mon Jan 18, 2021 1:24 pm
Forum: Reproduction
Topic: VS. Excitebike Mapper Hack?
Replies: 3
Views: 33

Re: VS. Excitebike Mapper Hack?

Seems like a great time to learn how to use an emulator with a debugger, then :p
by lidnariq
Mon Jan 18, 2021 1:22 pm
Forum: Other Retro Dev
Topic: Video Game Consoles with games stored in single-sided cards
Replies: 8
Views: 179

Re: Video Game Consoles with games stored in single-sided cards

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...
by lidnariq
Mon Jan 18, 2021 12:38 pm
Forum: NES Hardware and Flash Equipment
Topic: White screen on new opentendo build, no signal on M2
Replies: 3
Views: 60

Re: White screen on new opentendo build, no signal on M2

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...
by lidnariq
Mon Jan 18, 2021 12:15 pm
Forum: NES Hardware and Flash Equipment
Topic: Converting PAL to NTSC using Famicom
Replies: 7
Views: 226

Re: Converting PAL to NTSC using Famicom

The majority of US NESes have revision G or H PPUs, and they have a specific bug that some games rely on.
by lidnariq
Sun Jan 17, 2021 4:30 pm
Forum: Other Retro Dev
Topic: Video Game Consoles with games stored in single-sided cards
Replies: 8
Views: 179

Re: Video Game Consoles with games stored in single-sided cards

Oh, huh. I was incorrectly under the impression that those were SD cards mechanically.
by lidnariq
Sun Jan 17, 2021 4:12 pm
Forum: Other Retro Dev
Topic: Video Game Consoles with games stored in single-sided cards
Replies: 8
Views: 179

Video Game Consoles with games stored in single-sided cards

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...
by lidnariq
Sun Jan 17, 2021 1:59 am
Forum: General Stuff
Topic: problemkaputt.de is gone
Replies: 12
Views: 717

Re: problemkaputt.de is gone

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 ...
by lidnariq
Sat Jan 16, 2021 5:34 pm
Forum: Homebrew Projects
Topic: Animated Optical Illusions
Replies: 4
Views: 193

Re: Animated Optical Illusions

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...
by lidnariq
Sat Jan 16, 2021 5:09 pm
Forum: NES Hardware and Flash Equipment
Topic: Adapters
Replies: 4
Views: 144

Re: Adapters

Try looking into Sanni's cart reader.
by lidnariq
Fri Jan 15, 2021 9:23 pm
Forum: SNESdev
Topic: Proposed mapper extension for 4MB/8MB SuperFX ROMs
Replies: 2
Views: 144

Re: Proposed mapper extension for 4MB/8MB SuperFX ROMs

Higan manifests already support this, no need for recompilation.
by lidnariq
Fri Jan 15, 2021 4:32 pm
Forum: 2020 NESdev Competition
Topic: Witch n' Wiz - Puzzle Platformer
Replies: 21
Views: 1441

Re: Witch n' Wiz - Puzzle Platformer

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.
by lidnariq
Fri Jan 15, 2021 3:48 pm
Forum: 2020 NESdev Competition
Topic: Witch n' Wiz - Puzzle Platformer
Replies: 21
Views: 1441

Re: Witch n' Wiz - Puzzle Platformer

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?
by lidnariq
Thu Jan 14, 2021 11:53 pm
Forum: SNESdev
Topic: Using high bank lines as address decoder?
Replies: 6
Views: 325

Re: Using high bank lines as address decoder?

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...
by lidnariq
Wed Jan 13, 2021 8:51 pm
Forum: NES Hardware and Flash Equipment
Topic: NES-001 cap replacement guide for the av power module
Replies: 82
Views: 15490

Re: NES-001 cap replacement guide for the av power module

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.