Date   : Wed, 10 Jun 2009 15:38:46 +0200
From   : kortink@... (John Kortink)
Subject: 65C02 instructions

On Wed, 10 Jun 2009 12:54:49 +0000 (GMT), Tom Walker
<tommowalker@...> wrote:

>> > Yes. These instructions aren't in the 65C102 chips used in Acorn kit 
>> > though.
>> 
>> !? It's a Rockwell 65C102 and I'm referring to a Rockwell datasheet... 
>> but this addressing mode is not present?!? 
>
>I'm getting all confused now. The basic 65C02 supports these instructions,

No 'basic' 65C02 supports RMB/SMB/BBR/BBS. They are
Rockwell specific extensions that are not part of
the standard instruction set. Some manufacturers
support them, some don't.

>[...]
>
>The later 65802/65816 don't have these instructions in either

The 65816 has different instructions using the same
opcodes (and, probably intentionally, they happen
to have the same lengths).

>[...]


John Kortink

-- 

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