[SI-LIST] Off Topic : JTAG memory read
- From: "Deepak Mohan" <mdeepak@xxxxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Fri, 5 Jul 2002 13:33:51 +0530
Hi.
I have an embedded board (32 bit address bus, data bus) with 16 MB of
memory. The 16 MB consists of Flash, ROM, SRAM and SDRAM. The SDRAM is the
higher address memory, and ends at 0x1000000 .
When I view the memory using the JTAG debugger, all memory above 0x1000000
is shown as '??'. Why is that? How does the JTAG debugger know that I have
only 16 MB of RAM? I was under the impression that unused memory addresses
are usually mirrored.
TIA.
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