It's been posted on other forums already. In fact I copied the links from another members post on Atariage.Originally Posted by Satoshi_Matrix
BTW, nice bra in the thumbnail!
I noticed you mention modding the console (like all clones) to get Castlevania III running. Ironically, it's not necessary to mod the console to run Castlevania III from an Everdrive. You should at least footnote that fact for people who may be interested in playing the game using a flashcart, as I demonstrated previously.
It's also worth noting that a single NPN transistor and two resistors can be substituted for an single inverter, if a 7404 chip isn't available on hand. They don't sell 7404s at Radio Shack, after all. For digital logic, a 100k resistor is connected between the input and the base, and a 10k resistor connected between VCC and the collector. Ground is connected to the emitter and output to the collector. When the voltage on the base is higher than the dropoff voltage (typically 0.6-0.8V for silicone) of the BE junction on the transistor, the transistor conducts and the output is pulled low. When the input voltage is below the 0.6-0.8v, the transistor inhibits any current and the output is held high by the resistor. It's generally desirable for digital switching applications to keep the input resistor no more than 10x larger than the output resistor. This ensures the transistor continues oprating in the hard saturation region (either "on" or "off") which is necessary for digital logic applications.
I'm also curious if the Castlevania III fix or the Virtua Racing fix break any existing games. Probably not, but it's always a distinct possibility that fixing one thing breaks something else. I plan on doing the Virtua Racing mod because I own that game. Also the NES composite brightness looks fine to me on both my HDTV and CRT, so no need to bridge the surface mount resistor unless you have display issues.
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