Date   : Fri, 17 Jul 2009 18:43:40 +0200 (BST)
From   : johan@... (Johan Heuseveldt)
Subject: 6809 CoPro

Hi Jonathan,

On Thu 16 Jul, Jonathan Graham Harston wrote:
> Johan Heuseveldt wrote:

> > Sorry for the delay; was kind of (very) busy with my 6809 2ndP.
> > This weekend the PCB design was finilised. At last!!
>  
> Congratulations!

Thanks. (My first seconds of fame) :-D

> When you've got a core OS working could you let me have a list of
> core MS calls to add to the Tube Documentation at mdfs.net/tube and
> to fill in the gaps at the BeebWiki.

I'm not sure what you mean by this;

Tube code will be a translation - at least to start with - of
the 6502 (65C102) Tube MOS 1.10, drawn from the Master Copro.
So nothing fancy/extra to be documented.
Perhaps you have something else in mind, and I misunderstood?

Also note this is in many ways a test for me. Could I actually do
it, which is still to be seen!

Some bankswitching is used in an Acorn style, and not 'a la the
MMU', normally found in 6800/6809 systems. Other than FLEX in
a 64K environment, is not in the picture.



Greetings,
Johan

-- 
Johan Heuseveldt <johan@...              >
  aka  waarland

  The best place is a Riscy place

Wheat was given to us by extraterrestrials called the Manu.
W Scott-Elliot, 1896.