>  But wait a minute... You said 8086? I believe the Z80
> is also called 8080, right? Does these processors have
> any relation between them?

The Zilog Z80 was designed based on Intel's 8080 processor, which was the
processor CP/M was first created for.

It is instruction-upwards-compatible, and only the mnemonics of the assembly
language are very different, but that's not really a problem. The Z80 book
by Rodnay Zaks features a 8080 - Z80 mnemonics conversion table.

But it has little to do with the 8068. The only thing alike is the way they
store their values in memory: MSB first. Also known as "the Intel way", and
there was an official name I don't recall. But the opcodes (and also the
instructions) are very different. And don't forget, a 80386 is, although
compatible, nothing like a 8086 anymore.


~Grauw


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