> Masked ROM based Palm OS devices do not have a serial number, or may have
a partial non-
> unique serial number which identifies its manufacturing origin.
I'm not sure I understand the implications of this. I understand that Palm
devices prior to the Palm III do not have this serial number. Specifically,
I am developing for the Palm VII and possibly the Palm V, and need to know
if the serial number is a reliable way to identify a unique device for those
and future models. What devices qualify as "Masked ROM based?"
Secondly, about the function that you listed below to retreive a device ID:
I am already using this function successfully, however, the 12 digit
alpha-numeric number that it retrieves is different from the device ID
returned by using %deviceid in a pqa form. This number is all numeric, with
multiple periods.
Thanks,
Jeff Allen
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Jim Schram
Sent: Wednesday, February 02, 2000 4:16 PM
To: Palm Developer Forum
Subject: Re: Rom ID
At 3:34 PM -0800 2000/02/02, Jeff Allen wrote:
>I understand that the ROM ID on a Palm Device is unique per device (ie per
>user). First of all, am I correct that this is unique to each users palm
(I
>compared several Palms running identical OS's, and they each had different
>ROM ID's).
Masked ROM based Palm OS devices do not have a serial number, or may have a
partial non-unique serial number which identifies its manufacturing origin.
>What happens if the user upgrades his OS?
For flash based devices, a new version of the Palm OS is written to the
flash. For masked ROM based devices, various components of the OS are
replaced with RAM resident versions.
>Does the ROM ID change?
No, this area is not modified by an end-user flash upgrade.
>Also, is there a way for a program (compiled .prc file) to access
>the Device ID that can be accessed through pqa's (using %deviceid)?
CharPtr bufP;
Word bufLen;
Word retval;
retval = SysGetROMToken (0, sysROMTokenSnum, (BytePtr*) &bufP, &bufLen);
if ((!retval) && (bufP) && ((Byte) *bufP != 0xFF)) {
// it's valid!
WinDrawChars(bufP, bufLen, 20, 50);
}
else
// do something else; we don't have a serial number.
Regards,
Jim Schram
3Com/Palm Computing
Partner Engineering
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