Using Checksum function

Post by **dex** » Tue Jul 26, 2005 2:25 am

Hi,

I'm looking for help with the checksum function, I can't get it too work! I'm using TunerPro RT v 4.00.3554.0 on an eec-iv binary and setting the following under the 'add new' option on the checksum tab of the XDF Header Editor window; data start $2000, data end $E000, store address $200A, store size 16 bit, LSB first checked and the calculation is sum (no carry). However whenever I edit my binary the value of the checksum doesn't alter, am I missing something very obvious here?

Thanks in adavnce.

Post by **Mangus** » Tue Jul 26, 2005 9:55 am

That should be working for you, provided the data you're editing is between $2000 and $E000.

If you continue having problems, please email me a bin and your definition.

M

Post by **dex** » Tue Jul 26, 2005 11:42 am

Thanks, email sent.

Post by **dex** » Mon Aug 15, 2005 5:04 am

Any success on this yet?

Post by **Mangus** » Mon Aug 15, 2005 8:45 am

No, haven't had a chance to take a look.

M

Post by **dex** » Mon Nov 21, 2005 6:40 am

I've done a little bit more on this myself now.

I have modifed my binary file by enlarging it from 56k to 64k and filling the first 8192 bytes with null data and changing the data start address from 0x2000 to 0x0000. Now when I save the binary the checksum is updated. This however leads to another problem, the checksum isn't set to zero by TunerPro before it calculates the new checksum, you get a new checksum everytime you save the binary even though you haven't changed any data!

Also I've noticed that when I go back to look at the checksum in the xdf header the LSB check box has been reset to being unchecked.

Post by **Mangus** » Mon Nov 21, 2005 10:11 am

The LSB bug is fixed in the upcoming release.

I'll have to try what you outline. Not sure why there'd be a new checksum (unless the calculation is incorrect, but even so, the checksum should be the same each time).

Post by **dex** » Mon Nov 28, 2005 2:51 pm

Hi,

Still getting the ever changing checksum and reset LSB check box problem with the new version (4.12.1709).

Cheers.

PS I like the new version and am finding my way around the new functionality.

Post by **Mangus** » Mon Nov 28, 2005 3:14 pm

Dex -

Can you email me your bin definition and a bin file, along with explicit repro instructions?

Post by **dex** » Tue Nov 29, 2005 8:15 am

Email sent

Post by **Mangus** » Thu Dec 01, 2005 1:37 pm

For the record, these issues are worked out in the next release. Thanks Dex for your patience and help.

Post by **dex** » Sat Jan 14, 2006 3:36 pm

Sorted as of v4.13.0183, now eec friendly