This is the mail archive of the ecos-discuss@sources.redhat.com mailing list for the eCos project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]

Re: GDBstub porting for vrc4375

To: "Jesper Skov" <jskov at redhat dot com>
Subject: Re: [ECOS] GDBstub porting for vrc4375
From: "Ling Su" <lingsu at palmmicro dot com>
Date: Tue, 6 Feb 2001 10:26:26 -0800
Cc: "Jonathan Larmour" <jlarmour at redhat dot com>, <ecos-discuss at sources dot redhat dot com>
Organization: Palm Microsystems, Inc.
References: <000b01c08ff4$6da6bd10$0201a8c0@raccoon> <3A7FFB7C.B4E85040@redhat.com> <ww44ry7yd3l.fsf@host176.cambridge.redhat.com>
Reply-To: "Ling Su" <lingsu at palmmicro dot com>

> >> <2>. There are a 7-segment display on board, according to the
> >> document the address is 0x7c000000, I am trying to write to the
> >> address after system initialization, but it doesn't work. Anything
> >> wrong?
>
> Jonathan> Maybe PMON doesn't set up the MMU mappings for that?
>
> Or the CPU runs in big-endian mode and the LED is 8-bit addressed so
> you need to poke at 0x7c000000^3
>

In the document of this board, it mentioned the mapping and virtual address
is 0xc7000000 (Sorry, I made a typo last time).  Actually I tried to write
to (*(cyg_uint8 *)(0x7c000000 + i)), in which i ranges from 0 to 0xFFFF, I
guess I should hit the right address. :-/

Regards,
-Ling

References:
- GDBstub porting for vrc4375
  - From: Ling Su
- Re: GDBstub porting for vrc4375
  - From: Jonathan Larmour
- Re: GDBstub porting for vrc4375
  - From: Jesper Skov

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]