MegaDrive/Genesis Overclocking Topic

Hello! I'm Epicenter, the guy who came up with the MegaDrive overclocking procedure. I was invited to visit this place by Kevin, and thought I would drop by!

** EPIC GAMING IS NOW ONLINE AGAIN! **
http://www.epicgaming.net
IF THAT URL DOES NOT WORK:
http://www.epicgaming.uk.ro

The URL redirector should be fully functional worldwide within 24 hours, but the second URL will work, no matter what.

Some content is still being reuploaded, but the MD Overclocking section is ready.

 

Yay!!!

 

Welcome! Hope you stay around :smt023

 

welcome!

but hey, what is genesis overclocking?
:smt017

 

Wellcome to the forums.

Just a question about the overclocking... does it actually improve anything?

 

Overclocking is the process of making a processor, in this case the MegaDrive's 68000 CPU, run faster than intended by its manufacturer (Motorola/Sega's specification.) I've been able to boost the 7.6 MHz CPU to 13.4, 16.0 or even 19.6 MHz. This removes the slowdown that occurs in intense games like Sonic 2 (2P mode), Ecco the Dolphin 1/2, Vectorman, Gunstar Heroes, hard Drivin', etc. I have demonstration videos that will be online again soon..

 

Just don't start bashing Tototek here

 

I thought I had seen the Genny overclocking info floating around a few times before... interesting to be sure, but I'm sortof wondering - are there any heat or stability problems that arise from running the chip for extended amounts of time (~2 hours or so)? And are there any games themselves that are known not to work with the mod? Also, would there be any problem with game timing with these overclocks - i.e. would the counter run down faster in fighting games? I just thought to ask, as weren't Genesis games programmed in low-level assembly? I'd just think something like that would rely on the system clock or whatever to control the timing of games and such, but I could be wrong.

 

Apariently Epicenter knows what hes doing, he does extensive testing and has this down to a science. I was schooled on another forum for questioning the intelligence in overclocking a NES.

 

Err, from what I remember of the videos, it DOES indeed speed up the gameplay. Personally I'm not sure of the use of overclocking a console... yeah I hear ya, slowdown, but I'm not sure that the method JUST does what its set to accomplish

 

Snd come to mention it, its just dragging up things from the past

Then again, most console mods were taken from those magazines

 

I don't think MD overclocking necessarily spawned from Backup Technique, knowledge of a little computer theory shows that a crystal is all you need so its been done, this is nothing ground breaking or anything.

I'm going to work on getting a complete Backup Technique set to scan for the other more elaborate mods.

 

you talk about md overcloaking , but is it the same procedure for a genesis?
and could you be able to overclock a 32x ? (could be really cool..)

edit: woops ,sorry , i just saw the entire name of the topic ... i retire my first question
can you mod a genesis2\megadrive 2 then?

 

Yes, just figure it out yourself based on the procedure (again, where knowing something about electronics comes into play, not just "soldering by numbers")

Kyuusaku, would be interested to see some BT scans

 

wow , you're so polite when someone ask a question....
remind me the good days.

i didn't see the link because at my friend's house ....and he have a 28 k.



can we ask you question? or you're just making sarcasm when you respond it?

hey , btw : i repaired my sega cd ...thanx for your help, retro.....(i'm sarcastic by the way....)

if you think modding are for the pros ..... you're wrong!
and i'm the perfect exemple.....



:smt043

 

Glad you fixed it.

As I said, go ahead and try what you like but don't be surprised if something goes wrong (eh legit? how's the gd-r? ).

And as far as I can remember, I was the one who told you (several times) that you'd blown your Voltage Regulator. That's the thing the power goes into pretty much straight away in the machine.

Mk 2 Overclocking is undocumented as far as I recall, so if you wish to fiddle, go ahead... note this is more risky than changing a voltage regulator, and good luck Again same principle applies... find cpu, find crystal.... you can work out the rest

 

I remember that it could be done on the Model 2 Genesis. It's all about counting the pins from 1 - 64 .

Assembler, i think it would be an impossible feat to desolder the 6800 and put in a 6820 if thats what you're talking about.l

I also read that you can OC the N64 but I heard that no games will run on it OCed.

 

Any game that centers it's display logic on the vertical IRQ should work fine with this technique, since it basically just gives the 68k more cycles per frame to do stuff. The only bug I saw on Epi's TSS appearance, was that the bottom playfield went screwy when he halted, but that makes sense, because the 68k normally sets up the VSRAM and the horizontal scroll tables in the blank area between playfiels, but since it's halted, it doesn't change anything, thus the bottom playfield is rendered with the top playfield's scroll RAMs.