ZSNES board

If you LIKE the design, then you can set it as your system default! You can make the whole OS use a bitmap font, colour it purple, make your mouse pointer bitmapped and yellow. For the DOS style menu boxes you may have to petition Microsoft. At any rate the OS is the right level to make these choic...

Wow! That totally rules. That is my new desktop wallpaper! Thanks, fbx.

This thread is the best. You win ten internets!

It sounds interesting, please if you have time to spare post your code or at least explain how did you get to shrink the table so much. Here is the compressed table I ended up with -- it worked out to 240 bytes. Slightly smaller ones are probably possible, but maybe not worth the effort. If you wan...

I haven't written up any documentation on it, sadly. The basic idea is that there are bus cycles and work cycles. Bus cycles read from and write to memory; and work cycles do things like modify registers, set flags, etc. Basically, the SNES performs bus cycle N while performing work cycle N-1. The ...

I also changed staments as: if (ExpandedDiff(pixels[5], pixels[3])) pattern |= DIFF53; To pattern |= (DIFF53* (ExpandedDiff(pixels[5], pixels[3]))); Where I thought it didn't cause any trouble. I did managed to spare some cycles with these edits. Making all of those things branchless is probably a ...

Wow, that is a thing of beauty, FirebrandX.

I would love to make a 1280x1024 desktop wallpaper out of that. I'd probably put "EPIC WINNING LOL!" at the bottom in block white letters.

I know I'm a little late, but its nice to see this thread on the first page again! Edit: about this code from hq.cpp: newpattern = 0; if (pattern & DIFF26) newpattern |= DIFF51; if (pattern & DIFF56) newpattern |= DIFF54; if (pattern & DIFF86) newpattern |= DIFF57; if (pattern & DIFF...

Regarding windows sleeping for much more than 1 ms... You may want to comb through this thread for some ideas: http://mollyrocket.com/forums/viewtopic.php?t=520&sid=17b7bc65dff9081e25409509818667c2 He was trying to divide CPU time between a main thread and a background thread, such that on a sin...

What I did last time was store the H/V counters when the mul / div began, and each time either the result regs were read, or a full scanline had been emulated, I'd adjust the counters there. It was still somewhat noticeable, by ~2% or so. Same as I get with the same setup for my DMA counter. Those ...

The major units left are the ALU (prevent reading mul/div registers early), auto joypad-polling ("prevent" reading $4016/$4017 controller port bits while the SNES is doing it in the background -- in truth, it just throws everything off), and NMI during IRQ edge cases. The first two will r...

Once again, I'd just like to say thank you, to byuu and others, for continuing to push for more accurate and complete info about the hardware of the SNES and (in this case) special chips. I think in the long run your efforts will be very helpful in having quality accurate emulators. (Already there a...

The SNES is exactly the same as the NES. A two-stage pipeline is used. I tried to think of a way to emulate this, and really couldn't come up with anything sensible. The main thing to keep in mind is that the work cycle and bus cycle do different things, so it doesn't matter if they don't execute a...

Final test complete. We nailed it! Awesome work. I look forward to reading your article about this. I find your thoroughness and uncompromising attention to detail on bsnes to be an inspirational example, and the fact that this has been solved would prove the merits of your approach even if bsnes h...

Anyone designing a new GUI for zsnes might want to watch this video:

http://www.mollyrocket.com/video/imgui.avi

I haven't tried it myself, but IMGUI looks a lot easier than GUI programming using stateful widget toolkits (which I have done lots of, and doing it always sucks).

I'm really torn on this issue at the moment, and wavering back and forth on my opinion. On the one hand, I completely respect authors' wishes to not release their sources. On the other hand, it really annoys me that we still have these pissing contests in 2008. Hiding information so that one can be...

henke37's solution is definitely possible, just non-trivial to implement. As he says, the debugger is able to take the program stopped at (almost) any point and find all the stack frames and locals in the function call chain, using compiler-generated meta-information. The addition is to then to mak...

Would it be possible, then, that there would be certain conditions that would cause an infinite loop? As in, each time you advanced A or B or C to a safe point, it affected another processor, going round in a round in a never-ending circle? I don't think it can. Or rather, it doesn't matter because...

Honest question: is it worth the complexity to have a savestate where all the processors are at "the same" simulated time? Why not just step them all to *some* reasonable stopping point (such as instruction boundary) and then save all state, INCLUDING the current simulated time of each pr...

how large could this log get, do we log from rom load or just what went into the last frame? The log info would be pretty small (hopefully). You don't even need to log an entire frame---probably just a very small region necessary to get you from an instruction boundary, to the "precise save ti...

Okay, I've read through a lot of interesting stuff in the bsnes thread (yay!), including the handful of posts that spawned this one... non portable save states Forgive me, but I think it would be a terrible idea to implement save states which might then become un-loadable due to minor changes to the...

Wow, I've been away from these boards for a long time... I tracked down the old thread where I proposed the "log replay" solution mentioned by blargg: http://nesdev.parodius.com/bbs/viewtopic.php?t=2174 Note one advantage of this is that it *doesn't* depend on how you implement the instruc...

In case anyone's interested, here's the assembly syntax hilighting scheme I use for NASM code in UltraEdit. Its not perfect (e.g. it thinks cmp [foo],bar is a store) but I find it pretty useful: /L8"ASM" Nocase Line Comment = ; Block Comment On Alt = lea Block Comment Off Alt = ] Escape Ch...

Nach wrote:Go out and shoot MSVC. We really don't care about MS stupidity. Yet we maintain MSVC compiling support, but we don't want to hear about the stupidity seriously.

Its been a long time since I tried to compile zsnes. Is GCC/mingw now the preferred way to compile it on Windows?

...I should add that if you encode speeds in a few bits of a lookup table you already have, then you have already paid for the cache miss. That might make it preferable to TRAC's method (I don't know). Another possibility is to borrow just one bit from your lookup table entries and use it to differe...