I believe you are correct, however, if you set that bit, it is my  understanding that you will run into problems if any of your interrupt routines or functions called from interrupt routines need to access data or code from that flash unit. Those routines will fail if the interrupt occurs while you are accessing the information block!!!  Thus it would seem to be imperative to only read the information block at initialization time, and only while interrupts are disabled.  If that is your intended use, then you basically set that bit, and read the flash memory using the first address block of the flash unit.  I am not sure which 4 bytes you would get from accessing the program memory information block at address 0x0000, since that is mapped into Boot flash!!!  I suspect, to get the correct values, you would need to start your program information block values at address 4, and read them back starting at address 4.

Jerry.

-----Original Message-----
From: Christian Brauchli [mailto:c...@brauchli-netsolution.ch]
Sent: Monday, February 03, 2003 4:06 PM
To: 'Motoroladsp
Subject: [motoroladsp] JTAG_OVER_FLASH (Delta 0.6) option -info

Dear friends,

The Dos utility "jtag_over_flash.exe" to download Software to the DSP Family
5680x has got the option -info, which can be used to download Data into the
information block of the flash unit of the DSP. (e.g to download a serial
number/ programming date a.s.o.)

Does somebody has used this option already, if yes, may I have a copy of
this file (probably a S-Record File) which is passed over to the
download-utiliy. If there is also a C-Code available to read out again the
Data from the information block, I would realy appreciate it. I think there
is only 1 bit to set to read it out again from the information block, but
there is not too much information in the DSP-Manual, to be sure about this.

thanks and regards
Chris Brauchli

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