1227749 EEPROM Type

[ECMnut at aol.com]

They should read as 27256 eprom I think...
Are the broadcast codes AMDD-8389 ?
That was a really popular quad-4 chip..
MV
> While at the junkyard the other day I luckily came accross two '88 Pointiac
>  Grand Am Quad 4's.  They have the 1227749 with the uncommon Integrated
>  Direct Ignition.  I am trying to work with an old reader, but I am not too
>  sure what type of chip it is, or if it is too odd to read.  The chip in one
>  of the ECU's has the number 27C256 on it, that is an original chip, which
>  does not have a window for erasing.  My reader says it can read an I27256