[Coco] Coco 3 Memory Map Questions

[RETRO Innovations]

On 2/7/2016 12:57 PM, Robert Gault wrote:
> RETRO Innovations wrote:
>>
>
> I'll try to answer these questions although I'm not sure I know just 
> what you meant by some of them. If you don't already have a copy, get 
> the Tandy Coco3 service manual, #26-3334. There are .pdf copies.
Looked over my copy before posting, and yes, it is a fine resource.
>
> Since the cpu has 16-bit registers, it make sense for memory to be 
> accessed at that width.
That doesn't make sense to me.  The 6809 data path is 8 bits wide, 
regardless of the width of internal registers.  Just like the 68008 used 
an 8 bit data path even though the registers were 16 and 32 bits wide.