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it's all just a little bit of history repeating... Dega is a Sega Master System / Mark III / Game Gear emulator, and runs under Windows 95,NT,98,2000,ME or XP. The old standard disclaimer: I do not accept responsibility for any effects, adverse or otherwise, that this code may have on you, your computer, your sanity, your dog, and anything else that you can think of. Use it at your own risk. You can use this software freely as long as you don't use it commercially. _________________________________________________________________________ ___________ What's New? v1.12 + Added a setting in dega.ini called StartInFullscreen. If set to one, Dega will start in fullscreen (may be useful for game launchers). v1.11 (+ might have fixed a potential crash on exit) v1.09 + Added support for loading from .ZIP files (a much requested feature!) v1.08 + Added reverb effect to channels 0 and 1 in Enhanced PSG mode (sounds better). v1.07 + Added native Dega save state format, .dgz These save states are GZip compressed and also store the FM chip state. To load and save in .dgz format, use Load State and Save State. This format is also used for the auto save/load function.

To import and export in Meka's .s00 save state format, use Import Meka and Export Meka. * Changed the window sizing routine since it was changing a bit too much, now the window is just simply 3/4 of the desktop space. v1.06 + Added VGM sound logging. VGM is a sound format that Zoop and I have come up with for logging sound on various consoles. It is like GYM, CYM and SSL except the accuracy can be stepped up to 44.1khz sample accuracy if voices or other sampled sounds are used. + Added .PNG screenshot saving (F12). Screenshots are saved to a "shots" subdirectory. * (Changed Start button to C, this was to stop the game pausing when you press enter to okay a dialog.) + Added Pause function + Added frame advance function + Fixed Ghouls 'N Ghosts (sprite offset) + Changed volume table based on Maxim's real SMS experiments + Added a disable switch for the Red/Blue mode (e.g. for playing 3D games in 2D mode) + Noise channel is now rendered using pseudo-random numbers. (hiss is XOR with 0x12000 and buzz is XOR with 0x10000) Both use 0x0001 as the seed, which is reloaded when the noise type is written to. _________________________________________________________________________ ___________ How to use Run the emulator and select Load Rom from the File menu. Select a rom and click open. The keys are: Up,Down,Left,Right = Cursor keys (not on the numpad) Fire 1,Fire 2 = Z,X Pause/Start = C (On the Master System, the "Start" button was just the fire button.) To toggle the emulator menu, press Escape or the right mouse button. F8 is fast forward. _________________________________________________________________________ ___________ The FM Chip Some Japanese machines were equipped with a Yamaha 2413 FM sound chip. Select the "FM Chip" option from the menu to enable it. However please note that some games will only use the chip if both

"Japan" and "FM Chip" are selected in the menu. _________________________________________________________________________ ___________ Red/Blue 3D If the Red/Blue 3D option is ticked, Dega will take the original flickering glasses effect used on some games and merge the images into a Red/Blue image, suitable for viewing with Red/Blue glasses. Note that not all PC modes can do this (e.g. YUV overlay modes), because YUV doesn't have separate Red/Blue channels. _________________________________________________________________________ ___________ Overlay details If Overlay is set to None, Dega will use a normal DirectDraw surface to render graphics to. All modes are supported except 256-color. If Overlay is set to YUV, Dega will try to make a triple-buffered YUV Overlay surface. If it can't, it will use a normal surface. If Overlay is set to RGB (the default), Dega will try to make a triplebuffered RGB Overlay surface. If it can't, it will try a YUV surface, and if that fails it will use a normal surface. _________________________________________________________________________ ___________ Technical Information * * * * * * * Estimated 97% compatibility. Uses Dave's assembler Z80 core. Uses Dave's PSG sound emulator. Uses EMU2413 sound emulator written by Mitsutaka Okazaki. H-interrupts and raster effects supported. Supports DirectDraw Overlay surfaces used by modern video cards. Speech/sampled sound supported.

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