[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: RGB to VGA pin out?



Mark Frischknecht wrote:
Its due to how the iigs dithers colors.

In particular, it's because the video dot clock for SHR mode is
16MHz, not the usual 14.3MHz, so that the alternating blue-white
background pattern beats strongly with the VGA converter's video
sampling clock.

Search for IIgs VGA adapter in csa2 on Google Groups and you'll
find a long and winding discussion of this and other conversion
issues.

On 2010-12-06 06:20:28 -0800, powergs@macgui.com (Sam Latella) said:

Great!

The Mac adapter RGB to VGA works the the way it should. The pinouts seem to
be right on... Now with with the rgb/cga to vga converter I get the same
results. The system 6.01 desktop looks terrible, but still useable (which I'm not sure why it looks like that?). The rest of the programs look great
on a 22inch Samsung LCD monitor.

Sam


Mark Frischknecht wrote:

On 2010-12-04 13:33:45 -0800, "Apple2Steward" <none@none.net> said:

"Sam Latella" <powergs@macgui.com> wrote in message
powergs-1291463402@macgui.com">news:powergs-1291463402@macgui.com...

The converter I have is a rgb/cga 15khz to vga converter.  It
is the popular
model being sold on ebay (whitebox).  I suspect that one or two
of the
pinouts is wrong, but have no diagram of the crossover between
rgb and vga.

Sam


--snip--

Is it this one?

http://cgi.ebay.com/15Khz-RGB-CGA-Component-Video-VGA-Converter-Scaler-/350244621369?pt=LH_DefaultDomain_0&hash=item518c34cc39#ht_4557wt_934


That

is


the one i use. You can see the results on my LCD monitor here.

http://picasaweb.google.com/AppleIIguy/CGAComponentToVGA#

-michael

NadaNet 3.1 for Apple II parallel computing!
Home page:  http://home.comcast.net/~mjmahon/

"The wastebasket is our most important design
tool--and it's seriously underused."