Tony Duell wrote:
>
> > i also saw a trs80 model 4? it looked like my trs80 model 3 except it had no
> > disk drives and was white! i never saw a white trs80. i might go back and get
>
> The model 4 is an enhanced model 3. There are extra video modes (like
> 80*24 text), a memory mapping kludge (so you can have RAM starting at
> location 0 for CP/M, and also at least 2 banks of memory), single-bit
> sound (the output PCB is only fitted on disk systems, though), etc.
It might also be a DT-1 terminal, which was in a white Mod 4 case. Not the
best dumb terminal ever marketed, all of its emulations had the magic cookie
video attribute -- a blank space left when mixing regular and inverse text
within a line. But for a couple of years it was the only game in town for
Xenix users.
> > also found a tandy trs80 model ? which was similar in a way to the model 4
>
> Possibly a Late Modei 12 or Model 16? They were similar machines apart
> from the fact that the M16 had a 68000 CPU board in it (the Z80 used in
> the M12 was there as well - the machine could run all M12 software on the
> Z80 or Xenix on the 68000, using the Z80 for I/O).
>
> > except it had a vertical 8 inch drive, but someone had gone into it and the
> > keyboard was missing. not bad for finishing out the week.
If the box was mercedes silver, it's a Mod 2. If white with a cable coming
out the front bottom right for a keyboard, it's a Mod 16. Except for the
nameplate, the 12, 16B and 6000 are identical (well, the 6000 had added air
flow cabability, and most 16B's were retrofit with a huge fan in the back
access panel).
--
Ward Griffiths
"Men will never be free until the last king is strangled with the entrails
of the last priest." [Denis Diderot, "Dithyrambe sur la fete de rois"]
Received on Sun Oct 19 1997 - 08:52:05 BST