Strange Mod in Sega Genesis
hey guys, I've got a weird thing I found. I just picked up a Genesis off Ebay, the seller didn't mention any mods and I can't see any on the outside of it, like new ports or switches.
However while cleaning it out I found someone had lifted just one leg off the CPU and soldered in a resistor. I don't see any other wires or things done to the motherboard so any ideas what the heck this is for?
Posted Jan 15, 2016, 2:26 AM UTC
89
I don't think it is a mod. I think some systems were just made that way. It does look strange though.
It very well might be, it is one of the very early ones but even so it's pretty damn weird to see.
That does not appear to be a 'very early one' by at least 2 years.
It's an errata fix done at the factory on the address strobe (AS) line (pin 6) with a 220 ohm resistor. The fix was done to prevent the system from freezing up and was fixed in later revisions of the hardware.
Well by early I mean a model 1 :) but that thanks for explaining the reason for the Lil thing being there. Much appreciated :)
My system is the same