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Thread: Lost Souls
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On Sun, 24 Sep 2017, RussellMc wrote:

> I still remember quite a few of the MC6800 assembler mnemonics.
> Mental relative figuring would probably approach it's original ease fairly
> rapidly, I think/hope.
> 6800 family was a serendipitously good choice for raw machine language
> programming as the instructions group the operator and data bits far more
> logically for manual construction than does the 8080 family.

look at the 8080 opcodes again but in octal :-)

The Z80 opcodes were mostly 8080 with prefix opcodes that replaced HL with
IX or IY

Regards
Sergio Masci
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