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Could anybody explain to me why there is a memory hole for the 5402 DSK at 4000-8000? I don't understand why this is not external memory mapped to the FLASH or SRAM. Somehow, DSP/BIOS also knows that 4000-8000 is not valid memory and prevents me from configuring EDATA for 4000-ffff. How does BIOS know not to let me do that? Thank you, Micah __________________________________ |
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DSK mem hole?
Started by ●November 14, 2003
Reply by ●November 14, 20032003-11-14
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Micah- > Could anybody explain to me why there is a memory hole > for the 5402 DSK at 4000-8000? I don't understand why > this is not external memory mapped to the FLASH or > SRAM. Somehow, DSP/BIOS also knows that 4000-8000 is > not valid memory and prevents me from configuring > EDATA for 4000-ffff. How does BIOS know not to let me > do that? A guess would be that the standard C54xx core starts looking for external mem or extended prog memory at 0x10000 and TI did not want to mess with that. The C5402 is a less expensive device; i.e. remove this, remove that, sell for less. It came out after more powerful devices like C5410. -Jeff |
