Update to unreleased version.

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Added SRAM support. It's compatible with other emulators. It maps both the LoROM SRAM between $700000-$7dffff, and HiROM SRAM between $3n6000-$3n7fff (where n = 0 - f).
Modified the screen to redraw at scanline 224, instead of 0. Fixes some flickering between screens in some games.
Moved the lighting adjustment code ($2100 bits 0-3) directly into the PPU, rather than outside in the platform-specific code. This is because games have the ability to adjust this value per scanline. Also allowed the games to control the background enable ($2100 bit 7) flag per scanline now. This allowed Bahamut Lagoon's dragon intro to work.
I then added mode2 support, so now all that's missing is modes 5 and 6 (interlaced).
I also created an easy #define to select between the public domain mode7 code I wrote, and the snes9x mode7 code. I'll go through one of these days and rewrite the snes9x code in a clean environment (e.g. without using the current mode7 file as a reference) to avoid the issue altogether, but for now... the snes9x code is twice as fast, and that's good enough for me.
Lastly, I also added in a trace checkbox to enable tracing. As such, the zip file of my work up now has debug mode enabled by default. I really need an overhaul of the gui implementation, and a configuration file. I have a very nice string library system (that I wrote myself) that I would love to take advantage of in this project.
Here's some screenshots of the dragon intro. Lots of HDMA here, showing that I pretty much have HDMA down, now. I remember zsnes used to have a problem with these screens, and had to do something with an HDMA hack to get around it. They figured out what the problem was, eventually. I was actually quite surprised my emulator does not suffer from this same problem. Lucky for me, as they never did mention what the problem was to begin with. The HDMA is technically drawing too soon (at the start of the scanline instead of the end) which probably messes things up a bit, and I'm guessing the scroll registers are screwing up in one or two of the below pics. No mosaic support either.

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byuu 2004-11-21 00:00:00 +00:00

parent 591adfcb25

commit 1a017ff697

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