Recent content by sverx

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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Should be fine, then. (BTW it was affecting fifoSendValue32() function only, and only when sending values with higher byte != 0 ... maybe you're not even using that.)
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    So looks like it's FIFO. There was a bug, patched with dkP ver 1.4.7 (IIRC). Are you using an older version?
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Yes, if X & Y stop working while other buttons are still OK it's either FIFO (I hope you're using latest dkA/libnds because there was a nasty bug in FIFO a while ago...) or ARM7 code that crashed. Try closing the lid almost completely... does it go in sleep mode?
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Yes, you're doing sort of bilinear interpolation... sort of because actually it's very approximate, because it's made by hardware and with its capability you don't get exactly the weighted averages you would have to apply.
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Very similar... but different? What is lameboy doing? Not flickering & blending?
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Unfortunately that RAM isn't directly accessible like the main RAM (I mean it's not seamlessly adding up to the main RAM) so an ad-hoc code is needed to use those RAM expansions...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    You mean you're using more than 2 MB of RAM -before- loading any ROM? :blink: BTW zip support could be feasible on bigger ROMs for those having a DSi/3DS running in DSi mode...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Which library are you going to use to unzip? Theoretically it should be possible to unzip from disk to ram using a fairly small amount of temporary space...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    I don't get that shared memory thing. Aren't you using the capture unit with VRAM banks C and D for scaling? This should work on DSi too...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    'Tiled' backgrounds on DS can be of 3 types: 'normal', 'rotscale' (aka 'affine') and 'extended rotscale'. You can have 4 'normal' -OR- 3 'normal' and 1 of the other 2 kinds -OR- 2 normal and 2 of the other 2 kinds. Check BG modes here. All that is generated by the 2D core. Better: all that is...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Oh, right, you wanted to hardware blend and jitter the image to 'filter' it. No, unfortunately there's no sprite-to-sprite blending. This makes this whole bitmap objects thing unfeasible. Tile based backgrounds CAN be scaled and rotated. On DS you've even got extended rotscale backgrounds...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    You really made me worry about being completely gone crazy... no, actually the fact is that you have to use bank C and background on odd frames and bank D and bitmap objects (sprites! really!!!) on even frames. What I'm not sure now is if rotscale double bitmap objects exist or not... I've never...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Copying? Then you might be doing something wrong. Actually the captured image can be stored in vram and you can directly show the VRAM contents in "framebuffer" mode. I've never did that capture-show thing myself, so there is surely some reading I still have to do, but I've seen games rendering...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    The DS capture unit does a 'snapshot' of what the 2D/3D main core is generating and stores it in a 15bpp bitmap in VRAM... for instance this is used to generate 3D images for the 'other' screen. I don't get what you would like to obtain using it. What you get on that screen capture it's the same...
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    Homebrew Emulation GameYob, a gameboy emulator for DS

    Thus it means you could remove initClockIRQ() from your ARM7 code and place a call to resyncClock() in your VBlank handler (always in your ARM7 code I mean). BTW I really had a lot of fun playing the good old GameBoy Tetris yesterday eve, so thank you! :yaynds:
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