
gbc.sb2
by DCPU-16
Description
FAQ available below. http://scratch.mit.edu/discuss/topic/60460/ Changes (gb.sb2 -> gbc.sb2) - GBC support! Double speed CPU, full GBC I/O, full Colour. - Wave channel fixes. Length counter fix. - UI Cleanup - Frameskip, zoom and border controls. - Rom Packer/Unpacker (will soon use LZW) FAQ: Q: Does it run Pokemon? A: Yes! All the way through probably, but don't hold me to it. Q: Why is it so slow? A: Per pixel Graphics and CPU emulation take a lot of time, especially when HALT instructions are not used. This can be pinned down to excessive processing per cycle in the timing emulation (vblank, interrupt polling and timer) and the crazy if/else chain I'm using instead of a function lookup table. It should be possible to clean this up in the future. Q: How do I run other games? A: See the Instructions. Q: What types of games run? A: Games that use MBCs 1, 3 or 5 should run. (most nintendo licensed games and homebrew) Q: Can you please improve the sound emulation? A: I understand your plight, but it won't be possible to make it sound much better unless the game is running at an acceptable speed.
Instructions
Play at almost full speed in the phosphorus player: http://phosphorus.github.io/#53005142 Buttons: Z = (A), X = (B), Space = Start, C = Select, Arrows = Dpad Click the cartridge to import a custom ROM. Click "PLAY" to start! Press 1 to change the Zoom. Press 2 to change the frameskip setting (0-slow&smooth, 8-fast&jittery). Press 3 to toggle the border. Tool for converting ROMS: https://dl.dropbox.com/u/12239448/gbrc/index.html Open the ROM and then copy the output into a text file. FIX FOR CHROME FREEZE BUG: http://scratch.mit.edu/projects/53005142/?autostart=false Most games are supported. If you find any games that are not supported, please mention them in the comments.
Project Details
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