Date   : Tue, 26 Mar 1996 14:57:22 +0000 (GMT)
From   : James Fidell <james@...>
Subject: Re: BBC: Debugging info needed - can anyone help?

Chris Rae wrote:

> I now have a fair proportion of the BBC instruction set implemented, tho 
> how much of it is working is anyone's guess. The way I've done it is just 
> to get the emulator to boot into the O/S and implemented any instructions 
> it came across that I haven't done yet.
> 
> Well, I've got 1400 instructions into the OS and now it's trying to 
> execute opcode 3 - which doesn't exist. From this I could guess that 
> something's gone wrong somewhere!

I'd assume that it is.

> What I'd like, if anyone has it or could easily generate it, would really 
> help me. I'm after the state of the BBC flags after, say, ever 10 
> instructions executed by the O/S. This would give me a fantastic idea of 
> where I've gone wrong.

Xbeeb will display instructions as they're executed -- compile it
with DISASS #define'd to 1 in Config.h

> If anyone has these or could make them, I'd be your biggest fan. :-)
> Other than that it's a case of going through every instructions trying
> to see if it was working.

Happy days :-)

James.

-- 
 "Yield to temptation --             | Work: james@...               
  it may not pass your way again"    | Play: james@...                 
                                     | http://www.OiT.co.uk/~james/
        - Lazarus Long               |              James Fidell