MdntTrain wrote:
> On Mar 16, 8:15 am, Linards Ticmanis  wrote:
>> MdntTrain wrote:
>>>> They're claiming a 2-4 week backorder, so hopefully it
won't drag out too long.
>>> Who are you talking to there?
>>>> I'll probably pick up one of those single-board converters
for my C128, since it can easily be modified for RGBI.
>>> What resolutions does the C128 put out?
>> Its dot clock is exactly 16MHz for the 80 character screen.
>>
>> For the 40 character screen the dot clock uses frequencies derived from
>> the color carrier. In NTSC, it is 8.181818... MHz (16/7 * color clock),
>> in PAL it is 7.8819888... MHz (16/9 * color clock).
>>
>> --
>> Linards Ticmanis
> 
> The other board that Steven is looking at then won't work.  The other
> board is for arcade systems at much lower bandwidth.   My guess (based
> on everything Mahon has taught me) is that all kinds of beat patterns
> (aliasing bars) will show up at the C164's higher resolutions... which
> appear close enough to the problematic IIgs modes I witnessed.

There are no higher resolutions, AFAIK.  Also, there are many folks out there 
reporting success with the RGB board.  A fellow in Australia came up with the 
mode for the intensity line and sold a couple of dozen modded boards to folks 
in the US.  I've heard nothing about problems other than one of the possible 
CGA colors not quite matching what the Commodore display showed (dark yellow 
vs. brown or some such thing).
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