Opcode Galaxy Mac Emulator

Midi File Conversion / Opcode Galaxy Library, Banks, and Bundles files to Sysex. Them to System Exclusive files (.syx) or Standard Midi Files (.mid) for use in vintage hardware midi synths, soft synth emulators like FM7, FM8, VirtualCZ and modern patch librarian/editors. We can convert all types of Galaxy patches including for Yamaha DX7. The emulator requires that you have ROM images for the Atari operating system and the BASIC language. Sets BRK opcode behavior to stop in the monitor (on) or not (off). Correction of Antic 4&5 Bug affecting Galactic Chase & Mr.

Released the first messy source code. With many bugs. I used this to experiment and trying to get back at programming again and is a emulator/interpeter of the virtual machine chip8. Always wanted to code a emulator and this is the one they all say is recomended to start with.

It have glitches as most games does it render but only a few works as they should like missiles. Enjoy and share any progress here that you make. You have links to a bunch of sources to get you started in the file sources. Chip8 have a small qwerty keyboard.

1-4 q-r a-f z-v All included roms are free and from the sources sites. Project started here.

TOOLS I will add a few small tools i make while writing the emulator that makes things easy. This small thing converts hex numbers to integers in a small window with a inpput box. Yes its plain but usefull when converting java/python code etc. Kevin picone pointed out to me that its not a good thing to have alot of string conversions and that where very true Now can we instead of val('0xf000',16) write 3840. It actually seams agk have issues with many bitwise operations at runtime? After i started doing this so did more roms work local Opc_F000 as integer Opc_F000 = gl.opcode && 61440 // 0xF000 = 61440 So now is it done once and i simply use Opc_F000 So i dont do so many bitwise checks at runtime You will be suprised at the later release as i solved alot I dont dare to experiment with hex right now as things start to work when i started using integers Putting together the help file so will i upload wath i have so far But when you mention it so is the font loaded as hex with no conversions where agk transforms them to integers. // MOCK UP LOGIC Clipped=False // Check Sprite against screen edges, will it overlap the edges?

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If SpriteX+SpriteWidth > ScreenWidth then Clipped=True if SpriteX > xline )) > 0 b=WrapArray(((x + xline + Ypos )),lcd_size) if gfx[ b ] = 1 then v[ F ] = 1 gfx[b] = gfx[b] ~~ 1 endif next xline next yline else // customized version of blit with no clipping for yline = 0 to height-1 pixel = memory[gl.Index_register + yline] Ypos = ((y + yline) * 64) for xline = 0 to 7 if ( pixel && ( 0x80 >> xline )) b=X+Xline if gfx[ b ] = 1 then v[ F ] = 1 gfx[b] = gfx[b] ~~ 1 endif next xline next yline endif. // MOCK UP LOGIC Clipped=False // Check Sprite against screen edges, will it overlap the edges? If SpriteX+SpriteWidth > ScreenWidth then Clipped=True if SpriteX > xline )) > 0 b=WrapArray(((x + xline + Ypos )),lcd_size) if gfx[ b ] = 1 then v[ F ] = 1 gfx[b] = gfx[b] ~~ 1 endif next xline next yline else // customized version of blit with no clipping for yline = 0 to height-1 pixel = memory[gl.Index_register + yline] Ypos = ((y + yline) * 64) for xline = 0 to 7 if ( pixel && ( 0x80 >> xline )) b=X+Xline if gfx[ b ] = 1 then v[ F ] = 1 gfx[b] = gfx[b] ~~ 1 endif next xline next yline endif What is this compare doing?

If gfx[ b ] = 1 then v[ F ] = 1 I suspect it's collision detection.