12 Jan
2005
12 Jan
'05
12:23 a.m.
> >> ** Two of the S-100 homebuilts are
actually complete TRS-80's
> >> implemented on S-100 cards - they run the TRS-80 ROMs unmodified
> >> (with disk system) and load/run TRS-80 software!
> >
Are these Z80 TRS-80 systems, or the 68000 systems?
There actually were some
S-100 like systems (same connector, different board form factor) of the
model 16/6000 series. They were used in large (for the time) dialup systems.
I think they had 2+meg of ram and 2 or 3 four port serial cards. I have
never seen these, only heard about them. Some were even modified to run
68010 CPUs. There are instructions out there somewhere for this mod, but
no-one seems to have them readily available. They "lore" is that these
instructions were saved in the swap area of one of the install boot
diskettes. I was able to find and extract the games that were hidden there,
but never these instructions.
Yes, they are Z80 TRS-80 systems - the guy basically replicated a TRS-80
in homebuilt S-100 cards. I should have pictures up within the next week
or two.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.parse.com/~ddunfield/museum/index.html