24 May
2007
24 May
'07
12:07 a.m.
--- Tony Duell <ard at p850ug1.demon.co.uk> wrote:
Most had color capability on this side of the pond.
As you pointed out, only the Sirius/Victor and the
HP150x come to mind as being mono only.
Those drives couldn't read a standard MFM encoded
disk? I would have sworn there was a utility to
accomplish that.
I think once I open it up and turn it on the source
of the smoke will become soon evident. I'll keep ya
posted though.
I usspect one of the best 'IBM Incomatibles'
for
colour graphics was the
Sharp MZ5600 (I think that's the number). It has a
couple of ASICs on the
videao board and according to the manual it has
hardware support for 4
windows.
I think maybe you mean the 2800 (80286 + Z80?). The
5600 could only do monochrome. Not that bringing that
unit up is fighting fair anyway, t'wadn't abailable on
this side of the pond (as far as I know).
Apparently much of the wilder stuff (much of which
was of Japanese origin) just wasn't made available to
eh a *conservative* US market (can anyone think of a
different reason?). I drool over some of the stuff
that was only available in Japan, or some only in
Europe/
Australia.
group was 400
lines of resolution. My whole point
was
Yes, but most of the 'IBM incompatibles' had 1 bit
per pixel, just on/off
monochrome grpahics. The 'Bow had a CLUT and up to 4
bits per pixel I think. I don't
know a whole lot about the HP 150's (had
several in my grasp last year...). The
Victor/Sirius
had nice floppy storage though. As soon as I
figure
For a suitable definition of 'nice'. Actually I
don't much care for it,
as it's can't read or write a 'standard' (FM or MFM)
disk. The ability to
exchange disks with the rest of the world is
something I put very high up
my list of desirable features. As yuo doubtless know the data encoder/decoder is a
similar circuit to
that in, say, a CBM8050. The drive spindle motor is
controlled by a
microcontroller, etc, on the controller card and the
disk spins at
different speeds dependin on which cylinder the head
is on (the CBM
drives kept the spindle speed constant and varied
the data clock rate,
which is roughly equivalent, both methods maintain a
more even linear bit
density on different cylinders).
Like I said, nice LOL LOL
out why my 1
*working* V9000 billows smoke after
running for a couple of minutes, I might be able
to
tell you more about it LOL.
I have one. I also have a home-made schemaitc of the
machine, keyboard
and monitor. Let me know which section seems to be
emiting magic smoke
(PSU, monitor, CPU board, disk controlelr board) and
I'll see if I can
figure it out. For the record, I have the official techref for the
HP150 and 150-II
(including schematics) and a homemade schematic for
the 'bow.
Do you manually create these schematics? I had
thought of a way of doing it
electronically/automatically, but I never worked it
out to any degree.
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