26 Apr
2018
26 Apr
'18
3:19 p.m.
On 04/26/2018 05:58 PM, Bill Gunshannon via cctalk wrote:
On 04/26/2018 05:51 PM, Mark J. Blair via cctalk wrote:
I believe the
Z-80 was subordinate to the M68K.
THe reason for that is the 68K was available long
after the Z80 (about 4
years).
So the base TRS-80 had already evolved to the Mod-II by then.
On Apr
26, 2018, at 14:25, Geoffrey Oltmans via cctalk <cctalk at classiccmp.org> wrote:
TRS-80 Model II and 16, 68k based "business" machines
The Models II and
12 were Z80 based machines. The models 16 and 6000 were the same Z80 based machines with
68k subsystems added via additional cards to allow them to run Xenix. ?? The Model 16 was developed
independently of the Model II.? While Tandy had a version of Xenix to
sell for it
it shipped with TRSDOS-16.? It also ran CP/M-68K rather nicely.? It was
a good
machine destined to die when Tandy decided not to be a computer company.
That and
the base TRS 80 both saturated the market and also left many with a
bad taste when it came to expansion... least till they sorted it out.
I'd left there before long before it imploded.
Allison
bill