Re: 747 Rom Emulator / status

["Programmer" <nwester@eidnet.org>]

Cool---looking forward to it. Some GM c'sums are added right after the ID
byte--other older ones are
calc'd right after the checksum bytes...Programming 101 is correct for that
type of PROM--and I do believe
that's what is stated in the text.
Lyndon.
-----Original Message-----
From: Niinikoski, Juha <Juha.Niinikoski@mikrolog.fi>
To: 'gmecm@diy-efi.org' <gmecm@diy-efi.org>
Date: July 26, 2000 2:55 PM
Subject: 747 Rom Emulator / status


>
>Hi list
>During my vacation I have received only one message concerning my emulator.
>Today I added couple new features into it. Simple online hex editor and GM
>checksum calculation. After some more debuging I put it to ftp incoming.
>
>When doing this I found minor mistake in Programming 101 Information pages.
>Checksums and PROM ID chapter explains that checksum is calculated starting
>after checksum word itself. GM checksum calculation is however started from
>byte four.
>
>Now few questions.
>
>1.
>Are there somewhere free bin to Motorola S19 conversion program ? If not I
>have to make it.
>
>2.
>Where can I find most complete 747.ecu file for WinBin ?
>
>3.
>Where can I find most accurate information how to read 747 ALDL data stream
>?
>
>Juha
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