memcal

[jezza351]

hi guys is anyone able to help me out with a bin file I'm trying to read, it looks to be a custom memcal for a 5litre that is running in an old 808 from a vp. ive taken a read from the memcal set to 27c128 but cant work out if I have a good read and cant open it with any xdf. I'm mainly after ve table and injector flow.
thanks for any help

[jezza351]

pic of the memcal

[Dylan]

Whatever that thing is in place of the eprom, setting your burner to 27C128 isn't going to cut it.
If they've gone to the trouble of fitting something out of a space shuttle fair chance it's not going to be an old VN code base. If it is in a VR type code then fit it to a ECU and let flash tool read it out then run it through the memcal ID tool. There's a chance that thing could be scrambling the code anyway.

[Gareth]

Looks like the chip id has been delibrately rubbed off?...

[j_ds_au]

I thought the '808 EPROM was a 27C256 type. You would be safest to assume this or you may be missing half the bin.

Joe.

[vlad01]

Wonder what that purple chip does?

[Dylan]

VN was 27C128 but this thing definetely isn't GM issued. There's been talk on here before about another thing under the EPROM to scramble the code when a reader tries to read from it. But this looks even more that again. Wonder if it's a fancy ass FRAM set up? There was a user on here not long ago looking into them.

[HQ355]

Didn't come racing have some weird setup back in the 90's ?

[jezza351]

Definitely a weird one never seen one like it , I've tried different ways to read the bin file sizes etc but I only get blank reads unless it's set to 27c128.

[antus]

Try configuring your programmer for a 29c512 and with offset 7000 (hex) and let us know what you get.