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From: "HuangQiang" <jameshq@liverpool.ac.uk>
To: "eCos" <ecos-discuss@sources.redhat.com>
Date: Wed, 14 Nov 2001 02:24:00 -0000
Message-ID: <KIEBICHBADHFCLGCKOPDOEIHCJAA.jameshq@liv.ac.uk>
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Subject: [ECOS] RedBoot Question
X-SW-Source: 2001-11/txt/msg00183.txt.bz2

Dear All:
   In ARM E7T RedBoot User Manual:

Physical Address Range      C     B      Description
0x00000000 - 0x0007ffff        Y     N      SDRAM
0x03f f 0000 - 0x03f f ffff        N     N      Microcontroller registers
0x01820000 - 0x0187ffff        N     N      System flash (mirrored)


In the ARM E7T board there are 512KB SRAM,  512KB Flash memory. compared
with the above redboot memory setting confused me.

Q1:  As indicated above in RedBoot:  0x00000000 - 0x0007ffff SRAM ( ?=
(7ffff/1024) KB SRAM (am I right?) )  But where is the on board 512KB SRAM?
(or maybe I made the wrong way)

Q2: What is the meaning of "mirrored" in "System flash(mirrored)"?


Thanks a lot.

Best regards!


Mr Huang Qiang
Postgraduate Student
Room318 B-Block
Department Of Electrical Engineering And Electronics
University Of Liverpool
Brownlow Hill
Liverpool L69,3GJ
UK

Personal website at: http://www.liv.ac.uk/~jameshq