Re: CT60 and RGB?

On Sat, 22 Oct 2005 18:16:30 +0000, djuro pucaric wrote:

Thanks for the reply.

> see czuba-tech for 32 MHz video modes problem sloving...

Is this the section you are referring to?

----------------------------------------------------------------
32MHz CLOCK for VIDEO modes ?
This clock is sent to the EXT pin of the VIDEL (pin #14). For RGB and
ST-Mono modes you need a new 32 MHz clock because the origin 32 MHz clock
will be now a 40 or 50 MHz. More, if you have a old NON-Multisync VGA
monitor, you will have some problems to set some extended video modes with
a 40 MHz and worst a 50 MHz clock. A 32 MHz clock is ideal for such old
VGA monitors. Locate the video chip 'VIDEL' (U34). Locate the pin #14,
counting to the left from the right back side. In front of this pin, there
is a metallic hole connected to this pin. With the tip of the utility
knife, scratch the varnish until you reach the metal, then tin it. Be
Careful with the videl. Solder a short cutted pin of a 33 ohms classic 1/4
W resistor (not furnished) into the right forward hole of the oscillator
U37 (see DSP picture above). Solder a single thin wire from the resistor
to the hole of the videl pin #14. This wire must be as short as possible
and above the motherboard. For this place the wire on forward border of
the floppy motherboard connector and fix it with adhesive. If you have the
gray ATARI VGA adaptor, the extended video VGA modes with the 32 MHz clock
on pin #14 won't be possible with this atari VGA adaptorout modifying this
adaptor (which is bugged !). You need to flip it and cut with the utility
knife into the plastic, a 1cm wide strip on the whole length and at 4mm of
the metallic border. After this you can access the inside, you separate
the pin 15 from the pins 11 and 19. Move aside the 2 wires connected to
pin 15, cut them as close as possible to the pin and connected them
together. If you don't want to do this hack, you can get 2 DB19 (male and
female) that you will solder (direct cabling) without connecting the pin
15 (cut them). This little adaptor will be inserted between the Falcon VGA
port and the gray ATARI VGA adaptor.
----------------------------------------------------------------

So are you and it saying that if you don't do this you can't do RGB with
the CT60 and the motherboard mod? That would maybe explain some things,
like why some software doesn't work.

Thank you.

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