Emulation mode - Table alteration doesn't update checksum

ericruhl · Post by **ericruhl** » Tue Oct 31, 2006 2:31 pm

TPRT v4.14, Ostrich, GM 8746 ECU with the 61v2.xdf.

While emulating I offset the entire VE table and when I clicked Update the engine stalled. After some investigative work I discovered that the checksum wasn't being updated. If I saved the changes to a file first and then uploaded the entire bin to the emulator then all was well. I didn't have any trouble modifying constants or even single values in the table, but when I used the Offset function for some reason it didn't update the checksum.

Post by **Mangus** » Thu Nov 02, 2006 4:15 pm

Correct. This isn't actually a bug, it's a design decision. I used to have a function built-in that would update the running checksum, but found that it caused more problems than it was worth. You should instead disable the checksum routine by uploading 0xAA to the mask ID byte in your bin.

ericruhl · Post by **ericruhl** » Mon Nov 13, 2006 10:38 am

Thanks Mark, I changed the mask ID to AA as suggested