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Started by bigsanta, October 08, 2010, 10:30:35 am
Quote from: Lawrence on October 08, 2010, 10:58:08 amYou need a tri-state chip that can 'float', which the '157 cannot do. Basically, the '157 outputs either ON or OFF, but the system needs to be able to shut off the cart output entirely so it doesn't interfere with the rest of the console's operation.So no, this isn't gonna work for you.
Quote from: Tiido Priimägi on November 02, 2010, 03:50:13 am74AC645 is what you want to use. Its a 3-state octal transceiver, should fit the bill perfectly. Just tie the Direction with !WR or !RD and !Enable line with !CE signal of the huCard and you're good to go.