Posted By
MMS
on 2017-02-15
16:42:13
 |  Re: A mathematical demo
hi James,
many thanks for the detailed information, I learned a lot of new info from that.
Only one question on eZ80 (my "fav", yepp), I copy if from it's user manual (I read it in the past and that's why I found it so interesting beforehand too):
"The eZ80 CPU’s instruction set is a superset of the instruction sets for the Z80 and Z180
CPUs. The Z80 and Z180 programs are executed on an eZ80 CPU with little or no modification."
"The eZ80® CPU is capable of operating in two memory modes: Z80 mode and ADL
mode. For backward compatibility with legacy Z80 programs, the CPU operates in Z80
MEMORY mode with 16-bit addresses and 16-bit CPU registers."
So, as per the description, in the default mode the eZ80 CPU is almost completeley equivalent to a Z80, just much faster due to the CPU pipeline.
In practice, it is not true? Just a promise?
Thanks in advance.
(just for read, no followup: http://www.shaels.net/index.php/mic80/mic80-general/38-mico-overview
is states, that the CP/M Pascal runs 30x faster on the 50MHz eZ80 based compurer than on a 4MHz Z80)
As an other stated, the Raspberry Pi killed the eZ80's market, as it is much cheaper and more flexible than the eZ80 could ever be.
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