컴컴컴컴컴컴컴컴 NES4PC v0.35 Alpha 2 컴컴컴컴컴컴컴컴 旼컴컴컴컴컴컴컴컴컴컴� � NES4PC General Info � 읕컴컴컴컴컴컴컴컴컴컴� NES4PC is a Nintendo Entertainment System emulator for Windows 95/98/NT. It is programmed in Borland C++ Builder, and is entirely in C++. The QBasic port that I was working on has been released as NESEM: http://www.emuclassics.com/nes4pc/nesem/ NES4PC is written by David de Regt, who goes by the nickname of AkIlLa^ in most internet places. Yes, for those of you who recognize the nickname, I *AM* the one who did the FF3e translation that was furthest until AWJ/Som2 did theirs. But anyway, on to the juicy tidbits of info that you actually wanna read! 旼컴컴컴컴컴컴컴컴컴컴� � System Requirements � 읕컴컴컴컴컴컴컴컴컴컴� * Windows 95/98/NT4+SP3 * Pentium 150(?) for 60FPS in 8-bit color on 5 frameskip, Pentium 300 for assured full speed on 95% of games 旼컴컴컴컴컴컴컴컴컴컴컴컴� � Any Needed Instructions � 읕컴컴컴컴컴컴컴컴컴컴컴컴� *Config* For setting the keys for the controllers, click on the box for the key you want to set, and press the key. Don't type in a number, you'll set the key to the number you pressed not the number you typed in. *The Paddle* You control the paddle with the left/right keys that you set being turning it left/right, and with the A button that you set being its one button. *The Zapper* You control the zapper with the mouse. You click on the displayed screen to fire the zapper at that coordinate. In the future, I might implement something like a random jitter for the mouse cursor to make it not so easy to aim. If I leave it this way, most of Duck Hunt is easy as sin. =) 旼컴컴컴컴컴컴컴컴컴컴� � New in this version � 읕컴컴컴컴컴컴컴컴컴컴� v0.35 Alpha 2: (Plus alpha 1, # denotes new in alpha 2) *#Interface: Added the graphic NES4PC logo to the about window. *#Interface: Killed the debugging options for now, I'll be re-adding them. Too much of the interface wasn't working, I decided it was time for a re-write... *#Mappers: Rewrote mapper 15 in a cleaner way... Still doesn't work... *#Mappers: Fixed a few bugs in mapper 24 involving the scanline timer and mirroring. *#Mappers: Added Mappers 16, 17, 23, and 91! Too bad only mapper 23 runs anything so far. ^_^ *#Mappers: Fixed up a few bugs in the scanline timers for a number of mappers. *#CPU: Fixed a few bugs in the mid-frame vram write code. *#CPU: Fixed fairly large bug in the sprite 0 hit code, now zelda 2 and a number of other games work again! * CPU: Converted a very small portion to ASM * CPU+Mappers: Changed CPU memory access system that runs mapper 0 games a bit slower, but almost all games with mappers are a _lot_ faster! * Mappers: Worked on mappers 9/10 (MMC2/MMC4) * Mappers: Added preliminary mapper 90... Still hacking this one apart... * PPU: Added Mid-Frame VRAM Write support * CPU: Changed counter for clockticks per scanline from double-longint combo to a single BYTE. * CPU: Converted Accumulator addressing mode instructions into new implied instructions * Graphics: Removed all other graphics engines than scanline since the new mid-frame stuff made the other stuff completely obsolete, and they sucked anyway. It also sped it up a bit to not have the checking for which graphics mode is being used. * Graphics: Fixed up a long-time graphics bug where everything was being drawn 8 lines too early. * Interface: Downloaded Microangelo 98 and made a spiffy icon for NES4PC! 旼컴컴컴컴컴컴컴컴컴컴컴� � Contacting the Author � 읕컴컴컴컴컴컴컴컴컴컴컴� IRC: EfNet: #emu/#romhack/#zopharsdomain/#mul8 UnderNet: #gbinfow/#emu Email: akilla@earthlink.net Homepage: http://www.emuclassics.com/nes4pc/ 旼컴컴컴컴컴컴컴컴� � Version History � 읕컴컴컴컴컴컴컴컴� v0.30 (1/1/99): * Interface: Made a playing mode which hides the debug stuff. This mode is much faster for just playing in since windows doesn't have to update the graphics for the rest of the window too. =) * Interface: Huge optimizations! Runs 30% faster now! * Graphics: Added a new brighter palette. The old one was the iNES one, and the new one is from Nesticle. I'll be looking for better palettes in the future. * Graphics: A few optimizations to the scanline engine * Sound: Fixed a lot of errors in the looping/fading code * Sound: Fixed a lot of the scratchiness * PPU: Added detection for more than 8 sprites on the scanline. * CPU: Fixed stupid mistakes in PHP/PLP * CPU: A few addressing mode fixes. * CPU: Made a difference between a reset and a hard boot, there was no diff before * CPU: Fixed a few irq bugs * CPU: Converted 16-bit Stack Pointer (used for optimizations before) to more accurate 8-bit stack pointer * CPU: Converted CCR from 7 booleans to the actual 8-bit register * Mappers: Fixed mapper 4 (MMC3) * Mappers: Fixed mapper 1 (MMC1, Again!) * Mappers: Added mappers 9/10 (MMC2/MMC4, Same thing basically) * Mappers: Added preliminary mapper 15 (100-in-1) * Mappers: Added mapper 24 (VRC6) * Mappers: Added mapper 230 (22-in-1) v0.251 (12/16/98): * Graphics: Completely fixed 8x16 sprites * Package: Stopped releasing CART.NES with package v0.25 (12/16/98): * General: A ton of optimizations, little fixes here and there, etc. I have spent quite a few nights doing this type of stuff, and MOST of the time have forgotten to document what I've done. =) * General: Yet again, after a night of fixing bugs, I forgot to list what I did. =P * SRAM: Totally fixed! Works! * CPU: Added full trainer support * CPU: Fixed up a few extremely subtle instruction bugs * CPU: Fixed some MAJOR IRQ bugs! *TONS* of games now work! * PPU: Fixed name table mirroring bugs... Somewhere along the line the new mirror addresses got corrupted so everything was getting all screwed up. Took forever to track down this one... [as 2:45am blinks on my taskbar] * PPU: Fixed sprite #0 hit detection, now it actually works! * PPU: Added a scanline-based graphics engine. This is accurate AND fast! I'm amazed myself! =) * PPU: Fixed a few name table wrapping bugs * PPU: Moved drawing the background color from the beginning of the VBlank period to the end of the VBlank Period. * Mappers: Fixed the mirroring register in mapper #1 (MMC1) * Mappers: Fixed Mapper #4 since it was setting the mirroring incorrectly * Mappers: Added page change bitmasks to all mappers * Mappers: Added correct IRQ Countdown to Mapper #4 (MMC3) * Mappers: Added Mapper #8 (FFE F3xxx) * Mappers: Added Mapper #11 (Color Dreams) * Mappers: Added Mapper #34 (Nina-1) * Mappers: Added Mapper #64 (Tengen RAMBO-1) * Mappers: Added Mapper #66 (GNROM) * Mappers: Added Mapper #71 (Camerica) * Mappers: Added Mapper #99 (VS. System) * Controllers: Zapper fully implemented! * Sound: Full Pulse 1/2, without frequency ramping, using DirectSound! The amazing thing here is that there's virtually NO speed decrease! * Graphics: Fixed a ton of 8x16 sprite bugs! * Graphics: In 8-bit graphics mode, the fully correct palette is now in place instead of the closest-color-in-standard-windows-palette which is how it was before! Now there is no disadvantage at all to using 8-bit graphics AND it's a ton faster! * Graphics: In 24-bit color, a few of the windows had been screwed up as a result of me careless implementing the 32-bit color mode. Now both 32-bit and 24-bit should be working perfectly instead of neither. * Graphics: In the last version, I had added 32-bit color mode but forgot to say so. * Interface: Switched from using the timer control to using the high- resolution cpu-based timer, which is MUCH faster and more accurate! * Interface: Fixed the "Update color depth" command - It actually works now * Interface: Graphics Engine menu has all 3 graphics engines selectable * Interface: Added frameskipping to the tile-based graphics engine. It wasn't properly added before. v0.20 (11/26/98): * CPU: Timing is insanely better! * CPU: Continued this pattern by changing pushing/pulling PC to/from the stack to the actual value which is: on pushing (eg. JSR or an interrupt), the current pc is decrimented by 1, and on pulling it again (eg. RTS/RTI) the value is incremented by 1. * CPU: Fixed JSR/RTS bug. Apparently in the real nes, there's a bug in the JSR/RTS commands that reverse eachother, but I have to add the fixes anyway for ROMs that manually manipulate the stack. * CPU: Added fix for indirect jump 6502 bug (yep another actual 6502 bug =P ) * CPU: Added fix for indirect indexed 6502 bug (and ANOTHER actual 6502 bug =P ) * CPU: Removed all remnants of undocumented opcodes. I have been informed on all sides that there are no undocumented opcodes in the NMOS 6502. * PPU: Added Sprite #0 Hit detection! * PPU: Timing is insanely better! * PPU: Fixed up first vram read being invalid and not having it increment it, but after first read to increment it, and I decided that first read counted as a number of things, but in any event, it works. =) * PPU: Added scanline-based vblank/hblank code, no scanline-based graphics engine yet though or even a tile-based one. And no mid-hblank vram writes or sprite 0 hit detection. Still trying to work out reasonably speedy (and accurate) code before implementing those. * PPU: Made Vertical Scrolls of more than 239 be the correct negative scroll * Graphics: Fixed a few color bugs in the 8-bit color mode * SRAM: Fully Implemented! Compatable with Nesticle's SRAM save files too. * Mappers: MMC3 Completely Fixed as far as I can tell. * Mappers: MMC1 Register-setting code rewritten. It was setting the register backwards which kinda caused a rather large problem. Now MMC1 is perfect... Doh! =) * Controllers: Finally I got "Duck Hunt" working, and so I was able to test the zapper. I've implemented everything Y0SHi's doc outlines (Sprite under crosshair, trigger pressed), but it doesn't say anything else about it. Duck Hunt currently does its nice little white flare thing when you pull the trigger, but it doesn't show that you hit the duck even though I've set all the flags correctly. Oh well... I hope someone can help me with this since I really wanna get it working. * Interface: Added a Timing window just like nesticle has. You might wanna use it to fine-tune some games. It automatically pops up when you run NES4PC, so you might need to move the main window out of the way before you can see it. * Interface: Added "Update Video Mode" Option so that if you switch windows while in 8-bit color mode, and when you come back the palette is all skewed, you can do this and it'll generate a new matching palette and things should look all right again. You should also use this if you switch color depths after running the program so that it tells the graphics engine to switch to a new color depth. * Interface: Added trainer notification since all games with trainers jump to the trainer a lot and my emu doesn't support trainers yet so it just crashes out on you. This tells you to get a new ROM. * Interface: Removed "Force VBlank" command since the new timing would be all screwed up if you forced a vblank. Instead I replaced it with a "Force NMI" command and a "Halt on NMI" option so that you can do the technical aspects of a VBlank as needed. * Interface: I made the trace window non-read-only so you can just clear select portions of it if you want to instead of clearing the whole thing when it gets full. * Interface: Since Diskdude neglected to prepare for mapper #s more than 16, in his rom manipulating program, he had it write "DiskDude!" to bytes 7-15 of the ROM header. Unfortunately, byte 7 is now used for the high 4 bits of the mapper number. Previously, all roms with Diskdude's screwey header reported mapper numbers of 64 or 65 or so. I added something that detects for the diskdude header and deletes it from the file (saves it to disk) if it is found. * Interface: Added switch for NTSC or PAL mode * Interface: Added option to halt on bad opcodes or not * Interface: Made "Force Screen Render" debug command not affected by frameskipping. * Interface: Moved bad opcode message to the trace window and made it shorter v0.15 Public Beta 1 (11/19/98): * Graphics: 8-Bit GRAPHICS MODE PERFECTED! Speedy as hell! Much faster than 16-bit and 24-bit modes! * CPU: Removed the 3 undocumented instructions since I don't think they belong implemented and all you get is a few more invalid opcode messages but the games still run fine since the emulator isn't set to stop on bad opcodes. * Memory: Memory management largely redone. Bank switching code erased and rewrote from scratch (ooh that was fun...) Now it's much more accurate, however, and mappers should work much better as well as that the emulator should GPF a lot less! * PPU: Fixed large background scroll bug that made it scroll 240 rows of the name tables on the y axis instead of the NTSC 224. * PPU: Fixed huge background scroll bug where it wasn't overflowing and starting over again at the first name table in the scroll. * PPU: Made Background scroll Y value set to 0 if it's more than 239. It's not correct, but it's a temporary solution until I make the PPU code wrappable for those purposes. * PPU: Made background color go for whole name table array instead of just the first one. * PPU: Large bug fixed in rendering code - Not all 224 rows were being drawn which was cutting off the lower 8 rows of some games, and specifically, the Zelda title screen demo. That now displays perfectly. * PPU: HUGE BUG FIXED in scrolling since name tables weren't being drawn fully so that's what was causing those blank lines in games like Thexder! * VRAM: A few read/write bugs fixed * Game Genie: Fully Implemented! 6-Letter and 8-Letter Codes! * Interface: Because of the new bank switching engine, the PRG/CHR debug captions are now rendered useless since it would be too long to fit on the lines provided and would be unusable for most purposes since it's so different from the actual page #s which use unique bank sizes for each mapper. * Interface: Added automatic frameskipping * Interface: HUGE BUG FIXED in name table viewer * Interface: Made it set up everything as soon as the emulator is run instead of when you load a game. This should make it so that it doesn't always GPF if you do anything before loading a game. =) * Interface: Changed controller config window to the general options window and put all configuration options in there like Game Genie codes, frameskipping options, etc... * Interface: GPFs a **LOT** less! * Mappers: Fixed a large bug in Mapper #1 (MMC1) where it wasn't resetting the MMC1 registers right. * Mappers: A few bugs fixed in Mapper #4 (MMC3). * Mappers: Mapper #15 Partially Implemented, but I need much more info on it! The info I have is VERY vague (firebug's doc)! It's disabled here because it hasn't been rewritten for the new bank switching engine yet. * Mappers: Removed support all mappers above #7 (Except #15) because I haven't found any ROMs to test on them yet and I didn't want to reimplement them in my new bank switching format if there was no point to it. v0.12 Beta (11/9/98): * CPU: Added two undocumented instructions * CPU: Fixed an addressing mode bug * CPU: Tweaked a few instructions * PPU: Fixed huge bug in vertical scrolling. The game genie demo should be perfect now. * PPU: Fixed 8x16 sprite display bug * PPU: Fixed NTSC/PAL display centering bug * PPU: Fixed background scrolling bug * PPU: Fixed large background color bug * Controllers: Paddle support added * Controllers: Initial Zapper support added * Mappers: Fixed a few MMC1 Bugs * Mappers: Finished initial MMC3 Implementation, although I don't know how the IRQs are supposed to work... NE1 wanna help me out with this? * General: A few minor speedups v0.1 Beta (11/5/98): * First Version 旼컴컴컴컴커 � Features � 읕컴컴컴컴켸 旼컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴� � Part in question � Supported � To Do � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴袴袴袴� � Mappers � Supported: � Add more � � � 0, 1, 2, 3, 4, 7, 8, � � � � 9, 10, 11, 15, 16, � � � � 17, 23, 24, 34, 64, � � � � 66, 71, 90, 91, 99, � � � � 230 � � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴� � PPU � Almost Everything � Mid-HBlank VRAM Writes � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴� � pAPU � DirectSound � Triangle/Noise/PCM � � � � � � � Pulse 1 & 2 � Pulse 1/2 Frequency � � � � Ramping � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴� � Save States � Nothing � Saving/Loading to files � � � � on the fly with unlimited � � � � save states � � � � � � � � Compatability with .STx � � � � save states from Nesticle � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴� � Controllers � Both Joypads, Zapper,� Quad Controllers � � � Paddle � � � � � DirectInput � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴� � Graphics � 8-bit, 16-bit, � DirectDraw � � � 24-bit, and 32-bit � � � � � � � � Variable frameskip & � � � � FPS meter � � � � � � � � Autoframeskipping � � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴� � CPU � Everything � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴� � SRAM � Everything � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴� � Game Genie � Everything � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴� � Debugger � Everything � 읕컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴� 旼컴컴컴커 � Thanks � 읕컴컴컴켸 Johannes Holmberg, programmer of unNESsential, for having made the same 6502 CPU bugs as me while programming it, and telling me how to fix them, as well as providing tips for various other aspects of emulating the NES, and lastly for beta- testing the emulator! Y0SHi, for his personal answers to my nagging questions and for giving me confidential material of his which I won't mention but he knows what I'm talking about. Let's just say it really REALLY helped! Barubary, for all his help with the specific cpu instruction and addressing mode bugs in the real 6502. Thanks to him, my compatability did something of a VERY large increase the night after we chatted (Duck Hunt, Stackup, Thexder perfected, many many others...) TrelaneQ, for helping me fix mmc3! Everyone on Nesdev, for all their help with mappers, the system internals, and other general moral support or something like that. =)