Search found 43 matches
- Fri Aug 19, 2016 1:28 pm
- Forum: NESemdev
- Topic: Super Mario Bros slides too much
- Replies: 14
- Views: 10788
Re: Super Mario Bros slides too much
My first step would be verifying ROM checksums and checking if it is runs the same way in other emulators. It is definitely CPU bug assuming you have a good rom.
Re: 3DNes
I think he literally meant that your model is the same as the guy's whose nickname is "nocash", thats all.geod wrote:I'm feeling so stupid right now. Do you mean everyone will go for the free version or what?
- Wed Jun 22, 2016 3:48 am
- Forum: NESemdev
- Topic: PPU race condition - $2006 vs Y-increment
- Replies: 3
- Views: 2850
Re: PPU race condition - $2006 vs Y-increment
Should be quite easy to write a test rom for this, someone should definitely make it and test on a real console.
- Mon May 30, 2016 8:12 am
- Forum: NESemdev
- Topic: Mesen - NES Emulator
- Replies: 991
- Views: 637410
Re: Mesen - NES Emulator
Try out The Incredible Crash Dummies and Kick Master, many of emulators have difficulties running them (although it is basic A12 counter).Sour wrote:if anybody knows of any tests or games that fail on Mesen, please let me know!
- Fri May 13, 2016 12:50 am
- Forum: NESemdev
- Topic: Mesen - NES Emulator
- Replies: 991
- Views: 637410
Re: Mesen - NES Emulator
It cannot be 3-4 cycles delay, it is either 1-2 or 2-3 cycles depending where you count from. Half-frame and quarter-frame signals should happen before lfsr resetting. Or am I wrong?
- Thu May 12, 2016 2:01 am
- Forum: NESemdev
- Topic: Mesen - NES Emulator
- Replies: 991
- Views: 637410
Re: Mesen - NES Emulator
Found this in my correspondence with FHorse From wiki: After 3 or 4 CPU clock cycles*, the timer is reset. Thats true, but if you count clock cycles as ~W goes low, write commit is actually on ~W goes high. Anyway, It tells that timer is reset after 3 or 4 clocks. Note: Writing to $4017 with bit 7 s...
- Wed May 11, 2016 4:43 pm
- Forum: NESemdev
- Topic: Mesen - NES Emulator
- Replies: 991
- Views: 637410
Re: Mesen - NES Emulator
Uh... What do tests 9,10,11 really do? Care to describe them??? Well... And I don't really remember what my tests were about, so don't ask me) I mean, I wrote these tests more than 3 years ago, and I don't have any notes left since then. And I bet even if they existed I would be still unable to tel...
- Wed May 11, 2016 7:31 am
- Forum: NESemdev
- Topic: Mesen - NES Emulator
- Replies: 991
- Views: 637410
Re: Mesen - NES Emulator
Hi, Sour You said it passes more test ROMs than any other emulator currently available and I have to disagree. puNES does better, at least on my set. So, the tests that it failed: ppu_sprite_hit/09-timing.nes #4 Flag set too late for upper-left corner ppu_sprite_overflow/03-timing.nes #4 Flag cleare...
- Wed Apr 27, 2016 9:20 am
- Forum: NESemdev
- Topic: G.I. Joe (U) emulation problems
- Replies: 15
- Views: 14134
Re: G.I. Joe (U) emulation problems
To me it looks like scanline counter is clocked too often. Try to run TMNT3 on different levels, see if it has the same issue.
- Tue Jul 07, 2015 7:48 am
- Forum: NESemdev
- Topic: Some advice of DSP here...
- Replies: 97
- Views: 27263
Re: Some advice of DSP here...
Wow, all this looks too overcomplicated for me. In my emulator I used a very simple code . Doesn't look like it has any major problems, so why bother yourself with all this 16-order stuff if 2 could be enough for approximation? You can keep inventing more and more overnice filters all day but I doub...
- Fri May 22, 2015 6:39 am
- Forum: NESemdev
- Topic: NMI Hijacking IRQ
- Replies: 8
- Views: 3658
Re: NMI Hijacking IRQ
LFSR is clocked on every second CPU tick, thats all that matters.tepples wrote:Another way of expressing it:
Everything in the APU is clocked at half the CPU clock rate, except for the triangle wave's period divider.
- Sat Jan 17, 2015 8:12 am
- Forum: NESemdev
- Topic: Bomberman hangs on opening title
- Replies: 27
- Views: 16237
Re: Bomberman hangs on opening title
And what does that have to do with CLI latency? Regardless, that would cause it to freeze on real both emulators + real hardware let alone 1 person's emulator. It is not freezing on a real hardware because ppu status is read just before NMI being invoked. Therefore you need a correct logic to handl...
- Fri Jan 16, 2015 6:20 pm
- Forum: NESemdev
- Topic: Bomberman hangs on opening title
- Replies: 27
- Views: 16237
Re: Bomberman hangs on opening title
That has nothing to do with his problem. Not sure about that. If I recall correctly there is a typical problem that Bomberman has an active VBlank waiting via reading ppu status with NMI enabled at the same time, and it is clearing VBlank flag in NMI routine. So it could lead to infinte wait for VB...
- Fri Jan 16, 2015 8:48 am
- Forum: NESemdev
- Topic: Bomberman hangs on opening title
- Replies: 27
- Views: 16237
Re: Bomberman hangs on opening title
Make sure you pass CLI latency tests
- Tue Sep 09, 2014 12:00 pm
- Forum: NESemdev
- Topic: Which is the Most Accurate NES Emulator?
- Replies: 20
- Views: 9479
Re: Which is the Most Accurate NES Emulator?
Which is the Most Accurate NES Emulator? Not an easy question to answer. All the latest emulators tend to be very accurate, but I can highlight a few: -- Nestopia Can run almost any game. However it is not the best emulator in terms of accuracy. It has problems with IRQ processing, audio processing,...