[Coco] 6809 CPU architecture

[Roger Taylor]

I think you replied to Robert's 6809 msg but thanked me.

Anyway, here's some more pointers for you....


,X

,Y

,U

,S

:)




At 06:39 PM 1/22/2004 -0800, you wrote:
>Roger:
>
>Thanks for the pointers, keep them coming :)
>
>Jim
>On Tue, 20 Jan 2004 00:34:53 -0500
>  Robert Gault <robert.gault at worldnet.att.net> wrote:
>>
>>6809 Registers
>>
>>bit #   15                                    0
>>         ---------------------------------------
>>                   X - Index Register
>>         ---------------------------------------
>>                   Y - Index Register
>>         ---------------------------------------
>>                 U - User Stack Pointer
>>         ---------------------------------------
>>               S - Hardware Stack Pointer
>>         ---------------------------------------
>>                  PC - Program Counter
>>         --------------------|------------------
>>            A - Accumulator  | B - Accumulator
>>         ---------------------------------------
>>         \___________________D_________________/


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Roger Taylor