Hello Everyone

I now know enough about the registers and pcm on the 95 pcm to begin building a custom os application for it. My question is, what kinds of features/tables/constants would anyone like to see in a custom os.

I was thinking perhaps using the car's stock pcm connector to build a sort of sudo ip based communications network for the custom os for bidirectional commands.

Basically i like what they did with megasquirt, but feel custom os's could work wonders on a pcm that you can pick up for $5 bucks at any junk yard.

^ Stock ECU may not be powerful enough to handle that kind of I/O. When I decided to make my own ECU, I went through thinking about just doing a custom OS for an existing ECU, but found they were not nearly powerful enough to support all the features that I wanted, like Ethernet, CAN, Wideband, 2-Step, etc.





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i still think a custom os would be sweet even if the pcm wasnt capable of some of those fancy features, there would still be parameters that would be beneficial and useful with a new os. if ur willing to create such a thing as u speak, i say go for it even if those features shifted speaks of cant be utilized.

The pcm cant handle ethernet, but can do a sudo ip configuration using the aldl bus for serial communcation. I would implement it on a similar setup as the ALDL but the data packets will be sent as ip packets.

There is plenty of room on the chip for extra functions when you remove such functions as EVAP, EGR, CAT overtemp protection. And if your not using the emissions items then who cares. Plus, all that it takes to switch back to emmissions controls is swap out the eeprom to a stock eeprom.