19 Aug
2014
19 Aug
'14
5:11 p.m.
On 8/18/14 11:47 PM, Ethan Dicks wrote:
I know I have a working Viking Moniterm I (and the
Amiga card to go
with it). Apparently, on this very list, it was mentioned 13 years
ago that the monitor has DIP switches for its timing settings
(1280x1024 @ 60hz was apparently common, and as used with the
A2024-compatible adapter, 1024x800 @ 60Hz or 1024x1024 @ 50Hz)
On Tue, Aug 19, 2014 at 8:54 AM, Al Kossow <aek at bitsavers.org> wrote:
It does?
I had one at Apple, and it was fixed-frequency ECL input, very similar to
the design of the Sun monitor made by Moniterm.
Variable-scan monitors were quite uncommon before the NEC Multisync.
There might have been multiple different monitors sold as the Moniterm,
some fixed frequency and some selectable.
Before there were wide-range monitors like the NEC Multisync, there
were a fair number of monitors that could work at several specific scan
rates (with some tolerance), but not generally between those. IIRC the
first widely available ones would do CGA (NTSC-rate, 15.75 kHz/60 Hz)
or EGA (~22 kHz/60 Hz), and later ones added VGA (31.5 kHz) and
above. The good ones would just fail to sync if the hsync rate was between
supported rates; the cheap ones could actually be damaged.
Unfortunately many of the later Multisync (or equivalent from other brands)
did away with the ability to sync to lower than VGA rate. I'd like to obtain
an early Multisync that still could do NTSC rate.