VERY cool to see more CPU emulators written in FreeBASIC. i haven't worked on it for some time now, but i've written a complete 8086/80186 CPU emulator in 100% FreeBASIC. i've done a 6502 emulator in it as well. i've since moved on to re-writing it in C, but my old FB version is quite solid as well....

super_castle wrote:not funktion... not load :

http://irc.rubbermallet.org/extranes-freebasic.rar

not sure why people keep trying that link, but this is the current one: http://rubbermallet.org/moarnes-0.11.5.7.zip

let me know how it works for you please :D

damn.. i can't log into my old sourceforge account. all the passwords have been reset, and i dont even remember what e-mail address i used when i set it up. got another way to get in touch?

I was thinking: the emulator takes a .NES file as input. It then processes the content of the .NES file. This processing happens in an interpretive style. Decoding happens in exec6502(dotickcount) and several other routines/macros. Interpreting code is a slow process even if you find a way to optim...

I used to play NES games in an emulator called NESticle back in the day which ran full speed on my 486. FB won`t be as fast as the fastest assembly but I`m sure you could do better than needing a 1Ghz+ CPU. You are calculating the name table address and the character pattern address from scratch fo...

"-possible 6502 CPU core glitches, but mostly seems fine" Some games may be tricking the CPU using undocumented features. I found just today, a 6502 glitch list, on an old apple website. / http://www.textfiles.com/apple/6502.bugs.txt ~Kiyote! [edit 2more] "looks at whats supposed to be on the scree...

Mike i changed your NESi :-) download: moarnes_fb_mode.zip for the -lang FB mode but i don't get the bolder dash ROM working. Do you know what are wrong with your emulator ? Before i can help you to make it really fast the logic must be ok, you know? Joshy hi joshy, just peeked in that zip file - g...

thanks for giving it a shot! :)

and yeah, no bugfixing at all was required.

TJF, your code is very slightly faster than my original pure-FB macro but definitely slower than the assembly version. also, my original paste was apparently from a slightly old version and the last line: backgnd(dx) = VRAM(&H3F00 + pixel) actually should have been backgnd(dx) = PPUread(&H3F...

thanks, TJF. i will try that when i get home, i am at work right now. at home i have an old 1.13 GHz P3 laptop that is good to try these optimizations on to see how much faster i can get it running. as it stands, i have to run it on there with a frameskip of 9 (!) to get full speed which as you can ...

the most parts can be precalculated once of course you need an array off (256,240) values or the most parts only changed if dy=new scanline than you need only a table with 240 precalculated values. Joshy well, the thing is the background is generally constantly changing and scrolling around so ther...

this is the code from my NES emulator that renders the background image into the buffer... all this code has to be run once for every pixel! (256x240 @ 60 FPS) it's very slow... #Macro drawbackground(dy, dx) Select Case As Const PPU.nametable Case 0: calcx = dx: calcy = dy Case 1: calcx = dx...

i turned 27 a couple weeks ago. i started using BASIC in the late 80's when i was a kid. i can do C and assembly now, but sometimes i just get the itch to do some BASIC coding.

Mihail_B wrote:Mikey this seems not to work ...
http://irc.rubbermallet.org/extranes-freebasic.rar
Mirror ?

hi mihal, yes that was the link to my very old first try at this last year. check my last post, it has the current link http://rubbermallet.org/moarnes-0.5.1.11.zip

thanks for checking it out! :)

hey all, bumping this after a long time because even though i moved my NES emu to C, recently i decided to give it another go in FB, and the results are looking okay right now. http://rubbermallet.org/moarnes-fb-megaman2.png current status: -most mapper 0, 1, 2 games are working more or less fine -a...