1997 F-Body Tools

[Tom H]

Reading/upload is now complete except for the request from Kur4o for debug logging. I will get a look at that while the search for an LT1 OBDII PCM goes on...

There may be some interest in duplicating this capability for use with another cable. I have enclosed a transcript of the Class II bus for anyone interested.

In the file attached the first line is just to ensure the correct port is selected and opened
Lines 2 through 15 set up the download of code into internal ram
Lines 16 through 105 are downloading of the code to support modes $35 and $37 (not supported by the PCM native code)
Line 106 causes the downloaded code to execute, line 107 is the acknowledgement
Lines 108 through 9323 are the upload of flash from TSide bank 0, TSide bank 1 and ESide
Line 9324 causes the downloaded code to exit and reset the PCM, Line 9325 is the acknowledgement
Last two lines.. not necessary but are a request to normal activity on the ALDL

I hope to get to the programming side soon.

-Tom

[JimCT_9C1]

Thanks for the updates, Tom!

I'll catch up and take a look, been away from this for a couple weeks.
Great progress, thanks for the continued hard work!

Jim

[Tom H]

Hi,
Project is going ok, but with a few wrinkles. I have the module used to program the TSide loading into the PCM now. I can do all the easy work prior to programming like turn on/off vpp, read the mfg codes, checksum the part. I have looked through the zero the flash and erase the flash routines, they look OK. In addition most of the "feed the ESide fro programming" looks ok. There is trouble with the programming software however. There is no way to set the bank. Half the software looks like it wants to do a complete programming (that would be OK if we had the space to buffer the complete load somewhere), while the other half looks like it will only program the upper bank.
So that needs a bit of attention. I have already corrected two faults in the code and wonder if this module was ever used before. Alternative is that points of entry other than the start of the routine were used. I will spend a bit of time looking through this and changing it.

Main problem going forward is that I need to revive all that I did looking at bootstrapping. This is necessary because making bricks will be part of the debug. Probably can't avoid unless I am way too careful. Careful = slow.

I have not been able to find any OBDII PCMs locally. The Ontario/Canadian way seems to promote recycling as soon as possible. There are few of these cars around now. I am still on the hunt for any OBDII PCMs brick or working.

Looks like we will get a foot of snow today, so I will have time to go through the TSide programming module again and start to make the modifications needed.

-Tom