'89 Firebird ECM PROM

[Terry Martin]

Alex wrote:
> 
> Re John Hess
> 
> John, The IC you are talking about is an 128K CMOS EEPROM. If you have a
> look at any EEPROM manufactures data books you will find that they are
> 'garden variety' chips.
> 
> Regards Alex

I had a peek into one with a microscope, and it was etched "TI" Texas
Instuments, 27C128, which is a UV type EPROM not an EEPROM. However, if
you are thinking of hacking the code, or modifying it, the information
you require is available from the diy_efi site, through one or another
of the regulars.

Hope it helps.

Terry