dont understand (12-bit table)

chenpp · Post by **chenpp** » Tue May 20, 2008 8:55 pm

i`m have a pk-2 honda prelude 1989.
look at fuel tables.

lok at it in bit format

its a 12 bit fuel table. higher 4 bits used as a flags.
how i`m can make a conversion table for it???
I`m think i`m must make and #1f for higher bit.
but i`m need save this flags too.
help me with conversion formula please.

chenpp · Post by **chenpp** » Tue May 20, 2008 9:29 pm

without flags it`s looks like this.

beautiful

Post by **Mangus** » Wed May 21, 2008 6:43 am

In the conversion, you need to mask off the upper 4 bits:

x & 4095

Note, however, that this will completely ignore the flags. In fact, This also means that the flags will not be saved (they will be stripped off). There's no general solution to this. I'd need to heavily modify TunerPro to handle this specific case.

Nissan has something similar (where the upper bit is used to indicate knock enabled cells), so I need to solve this problem anyway.

chenpp · Post by **chenpp** » Wed May 21, 2008 1:41 pm

Thank you for fast answer, Mark.

I am glad that you are aware of the problem. I hope soon, it will be solved.