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#sega

71 posts59 participants14 posts today
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DEANJIMMY

Rapid Fire from #SEGA for Master System.
It has got a chip providing auto fire on pin 6 and 9.
First of all it does not work, as it expects 5V from pin 5 (on pin 14 of the chip).
I cut the trace to 5 and connected 7.
Works fine on a real #Atari7800 for #Atari2600 games (auto fire pin 6) but not for 7800 games, as there is a signal from the chip on 9 but nothing on 5.

On a 2600+ MCU detection fails but I guess I do know why.
If I invest much more time to cut traces and rewire this thing, it could be auto fire for paddles for the 2600+😊

Pins 5 and 9 must pass through with a passive connection.
Instead of 6 and 9 I will lead 3 and 4 via the switches and the chip, providing auto fire to left and right, which are the fire buttons of the paddles.

This has to be postponed!

Have to repair my Nintendo Switch (battery bursting the case) first and my wife wants me to plant some bushes/trees😉

Put a label on, as it works perfectly with an #Amiga for button 1 and 2 now😅

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