Re: PC-transporter...

[pubpc1@library.ucla.edu]

dempson@actrix.gen.nz (David Empson) wrote:
><pubpc1@library.ucla.edu> wrote:
>
>> On question I asked a couple of weeks ago but no one answered:
>> 
>> When I swapped the PCT's oscillator with one with double the MHz,
>> the display changed so that there were four little PCT screens, one
>> on each corner of the monitor.  Does this mean that the scan rate
>> is controlled by the oscillator and that I can theoretically use the
>> PCT with a VGA monitor?
>
>I suppose it might work, given a PC Transporter in a IIgs with a
>ColorSwitch adaptor.  You would obviously need a cable adaptor, and you
>wouldn't gain any of the features of VGA.

Any idea on how to build one?  I am considering getting a SecondSight
card for a VGA monitor, but I'm told the PCT will then need to be
on a second screen.  I'd like to pipe the (modified to 32kHz scan rate)
PCT video through the ColorSwitch, with the SecondSight plugged in as
well, to drive a single VGA monitor.


>
>This assumes that a VGA monitor can handle an unusual resolution
>(320x200 or 640x200), and that the PCT will work reliably at the higher
>clock speed.  There are probably other parts of it which also rely on
>the clock, such as the disk controller, which won't appreciate the speed
>increase.

The card seems to function fine with a 32MHz oscillator (vs. the normal
15MHz one).  I don't have any drives connected to the SWIM, which might
explain this.

I suspect it is doubling both vertical and horizontal scans, resulting
in 4 images.  Would a multisync monitor be able to "zoom in" on one
screen?

-Scott G.