Code 51, 749 ECM

[JTesta1966 at aol.com]

In a message dated 5/15/01 8:46:43 AM Eastern Daylight Time, 
btisdale at cybersol.com writes:

<< what a Code 51 (PROM error) is?  Reason I
 ask is that just recently some (not all) of my chips w/ just a single byte
 change result in this code being set.  What worked fine before now doesn't.
  PROM images read back fine, contain the data they're supposed to, but I
 get the rapid flashing Check Engine light & p >>

Either prom didnt write properly, or in the event of a single byte change and 
not recalcing the checksum resulted in checksum error. Either mark the chip 
as experimental (whatever address it is in your chip) or recalc the checksum. 
I know in hex workshop, 00 the checksum bytes, then edit/select all/calculate 
checksum...then insert the result in the checksum spot

================================================
Jim (FA) Testa                                 Type86 on buick.fiendish.net
ASE Cert Master Tech                                 jtesta1966 at aol.com
L1 Adv Engine Performance                     http://www.turbojim.com
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