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load problems


Hi all,

I am in the middle of porting Redboot/eCos to an STR71X board and have
reached the point where I have the basic console working on the board, I
can examine memory, etc. I am now attempting to load something
(anything) into RAM on the board, using the command

Load -m ymodem -r -b 0x20004000 test.txt

but I am getting the error message
"Specified address (0x20004000) is not believed to be in RAM - continue
(y/n)?"
This is confounding as it is, and if I choose yes it only ever
successfully transfers the first packet (confirmed by subsequently doing
a memory dump of the memory that was written to). 
The xxx_rom.h/xxx_rom.ldi correctly define the memory locations for the
platform (RAM at 0x20000000, size 0x10000 and ROM at 0x40000000, size
0x40000). 
The diag output on reset is 

+
RedBoot(tm) bootstrap and debug environment [ROM]
Non-certified release, version UNKNOWN - built 14:42:08, Jul 19 2005

Platform: STM STR7X/STR710FZ2 (ARM7TDMI-S)
Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.

RAM: 0x20000000-0x20010000, [0x20006b88-0x20004000] available
RedBoot>

Any help would be greatly appreciated. :)

m@

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