[Gmecm] 16212488 ALDL MODE2/MODE3 bin dumping?

[Rob Handley]

I can read an entire 32K EPROM from my ECM, via ALDL, as if it was sitting 
in a programmer. The EPROM is in the address range $8000-$FFFF.

As I said, how big is your EPROM?

Rob

----- Original Message ----- 
From: "Stefan Engh" <stefan at engh.com>
To: <gmecm at diy-efi.org>
Sent: 15 September 2007 20:35
Subject: RE: [Gmecm] 16212488 ALDL MODE2/MODE3 bin dumping?


Sorry about getting above/below messed up... I was looking at the bin in a 
hex editor.

I can only dump $4000-$FFFF. When trying to dump something in the 
$0000-$3FFF range every address gets the value of the $FFFF byte. From what 
I know the tables are located in the $4000-$FFFF range... $4000-$4001 Scan 
ID, $4006-$4007 Checksum, $4008 Mask ID and so on. Haven't got a clue what's 
in the $0000-$3FFF range and why it refuses to dump. I was hoping I would be 
able to read the entire EPROM as if it was sitting in a programmer.

/Stefan

________________________________

From: gmecm-bounces at diy-efi.org on behalf of Terminal Crazy
Sent: Sat 2007-09-15 14:17
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] 16212488 ALDL MODE2/MODE3 bin dumping?



On 15 Sep, Stefan Engh <stefan at engh.com> wrote:
I'm not sure I can help directly, but as a programmer these statemnents
sound odd....

> I can only get it to dump addresses $4000-$FFFF. Trying to dump anything
> above $4000 only returns the value of last byte ($FFFF).
I presume you mean you can only dump out $0000 to $3fff (16k )

> Could someone please shed some light on why it works that way?
Not really unless you can only address the 16k  like Rob said.
Most stuff that I've seen usually maps higher address over the same range
unless it addressable or just not available.

> What type of information is stored in the $0000-$3FFF address range?
No Idea.

Where did you get your ALDL info from? Was it the lists in the archives
off the 'net, I can't remember where I got them from without looking at
my notes.

--
Terminal_Crazy

Mitch - 1995 Z28 LT1 M6          terminal_crazy at sand-hill.freeserve.co.uk
Lancashire England 
http://www.sand-hill.freeserve.co.uk/terminal_crazy/