Prom Burner & EEPROM's

[Ludis Langens]

Swayze wrote:
> 
> If I
> understand the flash chips correctly, it is possible to get a larger flash
> chip and program one sector(?) while the ECM is using another,

Yes, there are some flash chips that can be used that way - however, the
ECM has to be doing the programming.  Or at least you'd have to add a
bunch of multiplexers to make the chip think the ECM is doing the programming.

> then it would
> really only be a timing issue as to when to switch sectors.

The chips that can be read while being programmed can't "switch"
sectors.  The intended way of using them is to have one sector contain a
small bootstrap function that never changes.  This bootstrap function
knows how to download new code into the rest of the flash.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org