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The fact that the sled moves out to attempt to read the ring means that the MCU on your modchip isn't correctly intercepting the drive commands and invalidating the ring seek command. So, i'd initially look at the MCU part of the modchip being clocked incorrectly. MrS

Drop me a line Pinchy if your still interested in R.Eing this... i like your idea about streaming an ISO across USB2. Be kinda like the PSUL/PSOLoad exploits for the GC. mrsporty(AT)gmail.com

Neither is it a very encouraging set of more than one word ;) TBH the mod isn't that hard to R.E. There is no complex crypto involved and the timing isn't particularly high speed or sensitive. The real reasons no one has dont it before is either lack of interest or lack of financial motivation.

DSO - Digital Sampling Oscilloscope. A scope with sample and hold capabilities. Way off budget for most of us i would imagine unless your employment or educational facility brought you into contact with one.

Ribbons and connectors i "borrowed" from old modchips and saturns .. your right , you cant find them anywhere.

I have a collection of PDF's should aid you in identifying the relevant datalines on the various IC's used in the saturns CD mech and the available modchips. Unfortunately , the forum wont let me upload it as either a ZIP or a RAR. Mail me for it.

I dont have either the PIC code or the PLD fusemap im afraid .. all of that is based on my own observations using an el-cheapo logic analyser. In this instance PAL/GAL can be interchanged as they used different devices on different batches. They both perform the same function tho and it would...

The combination of the 3 chips works basically as follows: The PIC is sat BETWEEN the DATAIN and DATAOUT of the CDROM controller MCU (This controller is referred to as the 64/32 pin chip by peeps on this board) . It monitors the command packets allowing most of them to pass unmollested until...

The manuf code stamped on the PLD in the middle of that mod board doesn't really mean much. As long as its a 16V8 and it has the same JEDEC file programmed into it , they would be electronically identical. MrS

My primary goal was to document the protection scheme, although some sort of ATA interface wouldn't be out of the ball park in the long run. An offshoot to the work so far is that i cant see it being too hard to inject a packet into the data stream when the region is being read .. thus negating...

For anyone thats interested , heres the progress ive made so far with reverse engineering the current batch of 21 pin mods in an attempt to create a universal type. In the attached Zip are 3 images: full1.jpg - This is a currently available SSIC8B modchip layed out for easy access. board1.jpg...

The "fuse" in a 16C54 isnt the same as a physical fuse. By milling the epoxy and using fuming nitric you can expose the silicon die of the PIC. You would then proceed to cover the ROM area of the mcu and expose the "fused" security bit to UV light thus wiping it and allowing the PIC to be...

@Twillinx Easy m8 , just use the mod but dont wire up the 4 region jumper wires. MrS

What you'd do is : Pop in the game you want , reset OR power up the console whilst holding the direction of the region the game is in. After 2 or 3 seconds , let go of any buttons and hit reset again to play. The console will remain in the region you selected for any further resets. The...

If it was possible i would have designed the mod to be just that... unfortunately IT IS NOT POSSIBLE TO HAVE AN AUTO REGION MOD. Sorry for the shouting but i really cant stress this enough. After powering on the console , there is a VERY small delay before the chip that has the region jumpers...

Sure thing , i used all 4 of the region jumpers anyway. Consider it done .. Right on the DPad is now Asia NTSC. MrS

Yep it runs from the Directional Pad to set your region. Up is JAP , Down is USA and Left is Europe. All you have to do is power up the machine or hit reset. You then have about 3 seconds to select the region. A further reset will restart the machine with the chosen region setting. In an ideal...

TBH id probably see if one or two vendors of retro stuff were interested in buying a batch of pre progged micros. Maybe jandaman or the likes .. MrS

Ill post some pics up of the saturn im deving it on later tonight. Its just in a regular protoboard at the mo but a full set of install diags would be provided of course.

Hi guys, im just looking for some feedback on a new type of region mod ive developed, just to see if anyone is interested in them. The mod consists of a single microcontroller which when wired into your saturn provides both region and 50/60 Hz switching via the DPad. Currently the mod has a 3...