Hello all,
     You can build an S-100 based system or you can go to ebay and buy a=20
S-100 system. Sometimes there are IMSAIs and Altairs on ebay. I Took the=20
build my own system from scratch path. The site to go to is=20
s100.computers.com. There are blank Backplane boards with several=20
configurations available. You can get boards for 8080, Z80, 8086, 80286,=20
80386, 80486. 68000, 6502, and 6809 processor boards. There are sound=20
cards, frt panel cards, FDC cards, HDD cards, ram boards, monitor=20
boards, and others. All of these boards are blank. They aren't all=20
available but from time to time a new batch is produced. All of the=20
files that you need are supplied so that you can produce your own=20
boards. Go take a look. Another site to look into is=20
retrotechnology.com. They offer complete boards, system, and floppy=20
drives including 8", 5.25", and 3.5" that are configured to work with=20
s-100 systems.
America: Love It or Leave It!
GOD Bless,
rich!

On 9/23/2017 9:01 PM, smplx wrote:
>
> 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 fair=
ly
>> 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 mor=
e
>> 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 wit=
h
> IX or IY
>
> Regards
> Sergio Masci

--=20
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