Search found 85 matches

by Grapeshot
Fri Apr 07, 2017 10:38 am
Forum: General Stuff
Topic: possible to add backlighting to the original gba screen?
Replies: 42
Views: 8905

Re: possible to add backlighting to the original gba screen?

If you have a GBA or DS with noticeable horizontal lines on the screen when things move, you can adjust the LCD bias voltage a bit and make it look significantly less noticeable. The adjustment pot is under the battery cover on the SP, DS, and DS Lite, and accessible through the model number sticker...
by Grapeshot
Thu Mar 24, 2016 10:52 am
Forum: General Stuff
Topic: Future compo ideas
Replies: 9
Views: 6708

Re: Future compo ideas

We could call this one Bee 53.
by Grapeshot
Thu Nov 05, 2015 9:59 pm
Forum: General Stuff
Topic: Typical American and European attributes of NES games
Replies: 36
Views: 6290

Re: Typical American and European attributes of NES games

Rare's games don't really have sound and music separated like that, but a lot of Codemasters games and Solstice and Overlord certainly do. So it's not even close to all European games, but I think it is distinctive. On the other hand pretty much every Japanese developed game after 1985 at least had ...
by Grapeshot
Wed Nov 04, 2015 5:06 pm
Forum: General Stuff
Topic: Typical American and European attributes of NES games
Replies: 36
Views: 6290

Re: Typical American and European attributes of NES games

I definitely think that a stylistic trait of European games is having sound effects or music but not both at once (and when there is both, they don't share the same channels.) Maybe this is an artifact from being ported from the C64 but when C64 games were ported by the Japanese developers they tend...
by Grapeshot
Wed Sep 09, 2015 3:15 pm
Forum: NESemdev
Topic: Cowboy Kid - Black Tiles
Replies: 7
Views: 2799

Re: Cowboy Kid - Black Tiles

Milon's Secret Castle does this as well.
by Grapeshot
Thu Aug 20, 2015 11:58 am
Forum: NESemdev
Topic: NSF files
Replies: 22
Views: 5350

Re: NSF files

You can try all the Famicompo Mini entries, available at http://midr2.under.jp/ (unzip them all to the same place and sort by largest size and you will find a lot of multi special chip NSFs) but be aware that a lot of those NSFs are not written according to current best practices. You may have to ad...
by Grapeshot
Tue Aug 11, 2015 12:22 am
Forum: NES Music
Topic: NSF bankswitching question
Replies: 4
Views: 3056

Re: NSF bankswitching question

I did go ahead and hex-edit my personal copies of those broken superNSF tracks but I know no one else will bother. There sure are an unfortunate amount of malformed NSFs out there, everything from Shift-JIS in the title field to not respecting the write delays required by the real expansion sound ch...
by Grapeshot
Mon Aug 10, 2015 10:54 pm
Forum: NES Music
Topic: NSF bankswitching question
Replies: 4
Views: 3056

NSF bankswitching question

If a NSF does not use bank switching, should I still allow access to the bank switching registers? The reason why I ask is because Strobe-Ziberia.nsf has all zeroes in the header from 0x70-0x7F but is obviously much larger than 32k. It expects to be loaded with the identity mappings and then tries t...
by Grapeshot
Fri Jul 17, 2015 8:51 pm
Forum: NESemdev
Topic: VRC7 audio, emu2413.c and Lagrange Point
Replies: 13
Views: 3458

Re: VRC7 audio, emu2413.c and Lagrange Point

What source of information did you use to create this? The wiki is incomplete. Programmer's guide to the YM2413 from SMSPower (where my envelope information came from): http://www.smspower.org/maxim/Documents/YM2413ApplicationManual This document on the OPL2 for how the logsin and exp tables were g...
by Grapeshot
Fri Jul 17, 2015 7:08 pm
Forum: NESemdev
Topic: VRC7 audio, emu2413.c and Lagrange Point
Replies: 13
Views: 3458

Re: VRC7 audio, emu2413.c and Lagrange Point

The instrument patches are different on the VRC7 and real YM2413, and the percussion mode is missing on the VRC7. You could try looking at my Java code, I reimplemented the VRC7 from scratch because a lot of emu2413 depends on macros expanded 3 levels deep and it didn't make much sense when I'd expa...
by Grapeshot
Fri Jul 17, 2015 6:39 pm
Forum: General Stuff
Topic: Was VHS really that bad?
Replies: 53
Views: 8132

Re: Was VHS really that bad?

On a CRT, you have the advantage of low persistence so offsets between fields of video don't look as bad. Also CRTs were built with PLLs to allow for wide variations in signal timing while most video capture devices sample on a rigid 3.58 mhz *4 pixel clock and have limited room to adjust that. VHS ...
by Grapeshot
Wed Jul 15, 2015 11:35 am
Forum: NES Graphics
Topic: NES with color Palettes of different systems
Replies: 36
Views: 35303

Re: NES with color Palettes of different systems

Here's what some games look like in Michael Bay vision (teal and orange, or NTSC decoded to YIQ with the Q component forced to zero) http://i.imgur.com/Wp5hprb.png http://i.imgur.com/qezfDNO.png http://i.imgur.com/l7FDQnx.png http://i.imgur.com/G9vi86B.png http://i.imgur.com/9hNzNpd.png http://i.img...
by Grapeshot
Mon Jun 22, 2015 9:10 pm
Forum: NESemdev
Topic: FDS registers
Replies: 12
Views: 3133

Re: FDS registers

Some pitfalls I ran into when I got this working last week: - The address into the modulator table is incremented after reading a value, not before. (This is very important with Bio Miracle Bokutte Upa because it resets the modulator value constantly and will result in weird pitch sweeps in that gam...
by Grapeshot
Sun Jun 07, 2015 6:06 pm
Forum: Newbie Help Center
Topic: What's the most accurate NES emulator? Demo differences...
Replies: 27
Views: 7134

Re: What's the most accurate NES emulator? Demo differences.

The obvious question is if you are initializing all of the MMC5's registers properly. There are a lot of them and I don't think anyone has written a test for the MMC5 power up state so that wouldn't be included in the accuracy metric.
by Grapeshot
Sat Jun 06, 2015 8:43 pm
Forum: NESdev
Topic: Different character of sound of N106 in Rolling Thunder.
Replies: 13
Views: 3590

Re: Different character of sound of N106 in Rolling Thunder.

Well I did go ahead and patch the NSFs I had to deal with this anyway. There's one track that wasn't in the other set, and all of them have different metadata because they were from the Famicompo archives.

Now if only I could get the fixed versions back in those archives so this never comes up again.