Re: [stella] [Stella] How weird is pha?

[Rodrigo Silva <stella@xxxxxxxxxxxxx>]

> Hi there!
>
> >While using CLEAR_START macro, I find the following in
> > Z26 trace log:
>
> >(  0  30   9 -41) (  3   3   1 131 101) nvbdIzc 00 2a
> > 00 2a  f008: 48       pha          <-- weird (12)
>
> > What is this "<-- weird (12)" comment added by Z26?
>
> The Pha is strobing HMOVE at cycle 12, where the HMOVE
> results are considered to be *weird* ;-)
>
> Greetings,
>         Manuel


How exactly does the PHA work? The only 6502 reference I have only says it 
"pushes accumulator". Can someone please translate it?

But what about the other "weird" pha instruction? Using the same logic, I 
can assume it strobes $6A. What is it there? Is there any other "syntax 
hints" Z26 do for me when tracing code?

Btw... I would really appreciate a 6502 Opcode Reference other than the one 
im using now. (http://www.6502.org/tutorials/6502opcodes.htm). Is there 
anything more comprehensive than that? A quick reference table would also 
be great. I remember a great 6502 opcode Matrix a while ago, but cant find 
it anymore...  Most of the links in The Dig are dead

Cya,
Rodrigo 

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