Ang: Re: Ang: RE: [Gmecm] New ROM-code in a 1227747?

[Per Lonnborg]

OK,

with the ROM inside the CPU I see the difficulties.
Thanks for clearing that out for me.

/Per

>----Ursprungligt meddelande----
>Fr?n: b.shaw at comcast.net
>Datum: 2005-nov-26 20:52
>Till: <gmecm at diy-efi.org>
>?rende: Re: Ang: RE: [Gmecm] New ROM-code in a 1227747?
>
>As Dennis said,  the ROM is contained in the CPU.  Removing the CPU and
>replacing it with 'something else' is a very big job.  You'd be 
much better
>off using the thirdgen device.  It should be fairly easy to accomplish your
>goals that way.
>
>The CPU is a 68hc11 variant 
with a few special instructions,  built by
>Motorola for GM.  You can't replace it with a commercial part without
>re-writing the code.
>
>Bill
>
>> --- Per Lonnborg <perlon at passagen.se> wrote:
>> 
>>> Wow!
>>> That was an impressing project going on over there,
>>> a complete 
new TBI-code with better options than in
>>> many new EFI-system it seems!
>>> 
>>> This was a bit more than I had plans for though, so
>>> 
I will ask again if there is a possibility at all to
>>> change the onboard ROM with
>>> "something else"?
>>> 
>>> On Ludis pages there 
are instructions to dump the
>>> ROM-content into a computer, so I guess the hard
>>> part is to replace
>>> that stock ROM chip. What chip 
is that btw?
>>> 
>>> I might add that I am quite new to both diy-efi and
>>> assembler programming, so maybe some of my
>>> questions 
seems strange!
>>> 
>>> Thanks,
>>> 
>>> /Per
>>> 
>
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