New monitors on old machines

[Chris M]

--- Chuck Guzis <cclist at sydex.com> wrote:

> This was very pre-VGA.  However, the monitor could
> take either 
> analogue RGB or TTL RGBI levels.  

 Not the monitor I have though. Unless I was doing
something wrong, it only played nice with analog VGA.
Hence my astonishment over the 9 pin connector.

> The fact that it
> worked with VGA 
> when it came out was pretty much happy coincidence. 
> This was not 
> unusual on multisync monitors of that era.

 There were other cards floating around, namely the
Professional Graphics Adapter/Controller (analog and
darn near VGA in terms of sync frequencies). Were any
of the late EGA cards analog? Something tells me so. 
 Besides the PGA and it's clones, were there any other
high end analog cards for a peecee about that time?

> There was (maybe "is") an outfit that offered ISA
> and PCI cards with 
> modified firmware to handle the sync issues. 

 You're right. "They" did make ISA cards too. Ran
about $150 IIRC.
 There was an example of scan doubling. There was no
way you could get 640 x 480 VGA on a 60-68khz monitor
w/o it. 31.5khz x 2 = 63 khz. Overscan went up or down
to compensate I guess.

> You
> just took a 15-
> pin to 5-BNC cable, set a jumper on the board and
> you were in 
> business. 

 Yep. I never owned one of those cards. I used to find
certain IBM badged Sonys that were particularly
exquisite...from $10 to $100, and even older then the
GDM-1950s. Something with that quality at the time
would run, o a grand probably.

> The cards would also work with RGB+HV separate sync
> monitors as well 
> as SOG.  I've still got a 17" HP/Sony monitor
> stashed away.
 
 Still got about 6 or 7 in all, 2 of the 17" HPs. One
runs at ~64khz, the other ~48khz. Then there's those
dopey Sun units that are all washed out (from use) and
much newer then my older stash.


 
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