Moates G1 adapter for 89 corvette with memcal question

bcollida · Post by **bcollida** » Sun May 09, 2010 7:56 pm

When I read the custom chip off of the Moates G1 memcal adapter in my 1989 corvette with newer 383, the chip doesn't seem to have all the bin file data I was expecting to see.

After I read the chip and open the bin file in Tuner Pro much of the data appears to be filler data ie 255 in decimal format.

I guess my first question is:

with a Moates G1 adapter for memcal, is the entire bin file used by the ECM stored on the new chip that plugs onto the G1 adapter OR is some of the bin file stored somewhere else on the memcal or stock chip?

Six_Shooter · Post by **Six_Shooter** » Sun May 09, 2010 8:54 pm

The entire bin is stored on the EPROM.

You have to realize that the bin will be at the end of the EPROM. Say you have a 27C512 EPROM, and you have a 32K bin, the bin itself will actually start at address 8000. This is normal. There is a way to read just the part you want, but it's been so long I don't recall how I do it, without actually trying to do it.

Post by **robertisaar** » Mon May 10, 2010 6:23 am

Six_Shooter wrote:The entire bin is stored on the EPROM.

You have to realize that the bin will be at the end of the EPROM. Say you have a 27C512 EPROM, and you have a 32K bin, the bin itself will actually start at address 8000. This is normal. There is a way to read just the part you want, but it's been so long I don't recall how I do it, without actually trying to do it.

you modify the addressing in the flash and burn screen... fairly simple to do...

Six_Shooter · Post by **Six_Shooter** » Mon May 10, 2010 9:25 am

robertisaar wrote:
Six_Shooter wrote:The entire bin is stored on the EPROM.

You have to realize that the bin will be at the end of the EPROM. Say you have a 27C512 EPROM, and you have a 32K bin, the bin itself will actually start at address 8000. This is normal. There is a way to read just the part you want, but it's been so long I don't recall how I do it, without actually trying to do it.
you modify the addressing in the flash and burn screen... fairly simple to do...

I think mine, being a Willem's programmer was a bit different in what I had to do.

Post by **robertisaar** » Mon May 10, 2010 9:27 am

yeah, willems are a LOT more complicated for this type of thing...

Six_Shooter · Post by **Six_Shooter** » Mon May 10, 2010 2:55 pm

Well, the "Dual Power" Willem Programmers were more involved, but that was just the addtion of changing a jumper between read and program, and if you changed chip types, then there were some dip switch settings to be changed....

The USB programmer "GQ-3X" is VERY easy to use, and is my current programmer. I have thought about getting a Burn2, simple due to size and would lighten up my tuning bag a little.

Post by **robertisaar** » Mon May 10, 2010 3:37 pm

i was actually looking at mcumall the other day... considering picking one up to read the BINs out of some OBD1 FLASH PCMs that haven't been hacked yet... could also be useful for the next time i brick my motherboard too from a bad BIOS flash.

but for auto chip stuff, you CANNOT beat the BURN2 for speed, simplicity and size.

bcollida · Post by **bcollida** » Tue May 11, 2010 11:35 am

thanks guys, I was thinking I probably just needed to adjust the buffer addressing.

Thanks for confirming. I'm out of town working at my real job so I won't get a chance to mess with this until later this week.

Once I get a look at the file, the only tweak I want to make at this time is to bump the idle speed up when I turn the A/C on.

I think I saw a flag in the first section of the 6E definition that looks like it will let me do that.