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Message
From: Heiko Panther<heiko.panther@w...>
Date: Thu Jan 22 16:12:22 CET 2004
Subject: [openrisc] ORP memory layout
ORP.txt says there is 1G RAM at address 0x0. OR1000 wants to find its
reset vector at addr 0x100. So obviously, steps must be taken to have
program code available in the RAM area after reset.
The ORP HDL code mirrors the ROM temporarily to address 0x0. So that is
a possible solution. Still I don't understand why ORP places RAM at the
processors reset address.
But that scheme doesn't work on the or1ksim, which doesn't do the
mirroring. Does that mean I have to build a seperate executable for use
with or1ksim?
Heiko
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