Intro to microcontrollers (long)

[Bruce Plecan]

What, you've done is outstanding in my book, but, for the average Hotrod is
way round the bend.   To say I'm not jealous is a lie.  But, how actually
nessecary is it?.
Cool, yes, trick, yes.
Grumpy


| > What I tell everyone is that the program is not really of importance.
The
| > tables are the important part. Even the most rabid of us GM ECM hackers
| > don't change the program code, only the data tables. It's interesting to
see
| > how GM goes about using the data in the program, but it's easy to get
side
| > tracked on the program.
| > Data tables. Layout, inter-relationship, etc.
| > Terry Kelley


| I must be seriously rabid then.  I have so far changed the code in 3
| major ways.   I adjusted some of the way the int's and blm's worked on
| my ECM.   On mine when the BLM was adjusted the int was not adjusted,
| I changed things so that when the BLM was adjusted the int was changed
| by an appropiate amount to maintain constant mixture.  This has
| appeared to make the car run better with the VE being off since the
| fuel mixture gets to the right point much faster with less
| oscillation.

| I also rigged the fuel curves to be per gear, I don't know if that has
| actually helped any performance, and I added some code to lock the TCC
| at the top of second gear (and unlock it at the bottom of 3rd).

| So far adding code was not that hard.  I have only had 1 revision of
| code that actually caused the computer to watchdog reset, and since
| then I have been much more careful checking things.
| Roger