i51 a opcode $5A

[Stranger]

Zdravim,
 je to vytrzene z kotextu, link je dole. Pomuze to ?

'Binary code compatibility is nice, you can move right up to a more
    powerful engine without having to bust a gut (We all know the Intel
    binary compatible success story with their 80x86 microprocessors).
    But if you're working on a new design, how necessary is binary
    compatibility?  If you're just looking for a souped up '51, Dallas
    already has the 320.  If you need the advanced features, you'll need
    to recompile or rewrite your software anyhow.  You'll also have to
    drag along some compatibility baggage with you in order to use the 16
    bit operations - these are preceded by an escape code (A5H), the only
    instruction not used in the 8051 instruction set.'

http://www.lib.ox.ac.uk/internet/news/faq/archive/microcontroller-faq.8051.h
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