On Wed, 26 May 2010 18:44:44 -0400, David Given <[email protected]> wrote:

> [*] Cheap, now defunct, handheld toy computer with a Hitachi H8300S
> processor and proprietary wireless connection.
>

...it is probably an H8S/2xxx series microcontroller and not an H8/300.

Unlike the 300-series, the 2000-series has an external address and data  
bus.  Some (a few) have on-chip memory controllers.

When building a cross-compiler for the H8 family, you specify the  
target=h8300 and it will build for all variants, including the relatively  
new H8SX.  When compiling for your target, you will want to specify the  
'S' variant and probably a 32-bit integer, which I thought/think Prex  
wants.  -ms -mint32

You'll want to create a suitable linker script for your target that speaks  
to your memory map.



Take Care.

Rob!

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