Search found 183 matches

by Drakon
Sat Apr 20, 2013 8:40 am
Forum: SNESdev
Topic: SNES rgb comparisons
Replies: 10
Views: 6322

Re: SNES rgb comparisons

Thanks for posting. I did something similar but with s-video: https://www.youtube.com/watch?v=K8TcINkc7eE Left = snes mini (onechip ppu) with a sony cxa2075 encoder wired up Right = s-video from a stock model 1 snes with the two ppu system Watch in hd for best results. As a bonus the cxa2075 gets ri...
by Drakon
Mon Apr 15, 2013 3:29 pm
Forum: SNESdev
Topic: Help with 8mbit roms in a m27c160
Replies: 4
Views: 3898

Re: Help with 8mbit roms in a m27c160

Well the sad thing is this 27c160 barely increases the speed, oh well. More luck than anything else haha. As for access speed I burned some rom images to a m27c801-80 (80ns) chip and it made no difference. It just seems these ST chips overclock better than the Amtel chips.
by Drakon
Sun Apr 14, 2013 8:26 pm
Forum: SNESdev
Topic: Help with 8mbit roms in a m27c160
Replies: 4
Views: 3898

Re: Help with 8mbit roms in a m27c160

Yes I didn't connect the pin to anything but ground. And yes I doubled the images of all games I burned. Tomorrow I'll try running stunt race fx and starfox 2 at default clock speeds and see if that helps at all. Stunt race fx has weird things happening I'll be driving normally and suddenly my car w...
by Drakon
Sun Apr 14, 2013 9:28 am
Forum: SNESdev
Topic: Help with 8mbit roms in a m27c160
Replies: 4
Views: 3898

Help with 8mbit roms in a m27c160

I discovered that the m27c160 has a slightly faster access time than the m27c801 so it allows me to overclock games faster. I managed to get starfox 1 running fine on the chip by doubling the rom image in a hex editor and burning it. The highest address line I just tied to ground. I tried the same t...
by Drakon
Sat Apr 13, 2013 5:54 am
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

I never claimed more frames were added, I claimed the framerate increases. I never once said more frames get added I just said the framerate is sped up. Anyway I discovered that some superfx carts can overclock 2-3 mhz faster on certain games. There's no way to tell which ones can it's just trial an...
by Drakon
Thu Apr 11, 2013 5:33 pm
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

Sure it's the least I can do for all the help I got from here. I mostly used the amazing nocash superfx asm information here: http://nocash.emubase.de/fullsnes.htm#snescartgsunprogrammablerisccpuakasuperfxmariochip10games Before I started romhacking starfox 1 was the only game I had that would run a...
by Drakon
Thu Apr 11, 2013 5:21 am
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

57 mhz starfox 1 http://www.youtube.com/watch?v=ZLcw3O7aTgo&feature=youtu.be http://www.youtube.com/watch?v=qqi1aow6GZI&feature=youtu.be Setting the irq mask to "disable irq" stopped the games from glitching out when overclocked past a certain speed. Here's what starfox 1 used to l...
by Drakon
Wed Apr 10, 2013 3:25 pm
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

Got it working a while ago thanks a lot to all who helped especially mic_. I did just that I figured out how to get the breakpoints working found where it writes only once to 2100 and just replaced it with my register write and now starfox 1 runs at 57 mhz. What's interesting is in the config regist...
by Drakon
Wed Apr 10, 2013 11:01 am
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

The hex for rts is 60? The code I'm replacing is at 16263. I want to jump to 17f60. What would rom address 17f60 be in the jump command? I'm not sure where the rombanks begin and end.
by Drakon
Wed Apr 10, 2013 9:46 am
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

I succeeded by just overwriting a register write at 16263 The health bars of my friends are glitched as a result, I need help finding free space, writing a jump command, and relocating the original code so I can still execute it haha. But my experiment worked, setting high speed multiplier mode and ...
by Drakon
Wed Apr 10, 2013 6:47 am
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

I replaced all instances of 8D 00 21 with a9 xx before it, nothing changed....darn....

at 162d8 I changed "F8 02 8D 00 21" to something that changes the screen mode, that broke the game good haha. Don't think that's the right code though.
by Drakon
Wed Apr 10, 2013 6:25 am
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Re: Need help adding some super fx programming

Thanks, I already know this will work. After poking around the starfox 2 rom I discovered that starfox 2 doesn't have high speed multiplier mode enabled for some reason. Since I needed to disable double clock speed mode in the game to allow it to overclock faster, I just re-wrote that register write...
by Drakon
Tue Apr 09, 2013 4:55 pm
Forum: SNESdev
Topic: Need help adding some super fx programming
Replies: 25
Views: 12419

Need help adding some super fx programming

Okay I'm doing some experimentation with the starfox 1.0 american rom. I want to add this line of hex code to the rom: "A9 A0 8D 37 30" This should tell the gsu series superfx chips to enable a mode that'll make it run smoother. Obviously you need a gsu 1 / 2 instead of the mario chip to m...
by Drakon
Mon Apr 01, 2013 6:36 pm
Forum: GBDev
Topic: New BGB feature coming soon!
Replies: 6
Views: 4501

Re: New BGB feature coming soon!

I love bgb. It's the best debugger.
by Drakon
Wed Mar 20, 2013 3:42 pm
Forum: SNESdev
Topic: SuperFX Multicart
Replies: 22
Views: 12713

Re: SuperFX multigame experement

This is insanely awesome!