Nat ha escrito:
> Thank you, Hal. This makes a little more sense. Another user here reported
> that the composite video out only output a *monochrome* video signal and
> that I needed the backpack for the DB-15 to get any color at all. But maybe
> the regular IIc (not the IIc+) really does operate this way.
I was the one that told the //c's RCA output gives a monochrome signal (pure
black and white, not even grayscale). I can assure that it is true for the //c
(or at least for my unit). But, as I also said, I can't say about the //c+,
because I don't own one :-( . It may be true that the //c+ gives a color signal
in the built-in RCA.
Someone said the //e output a color signal. FI think this is only half true. In
my European Enhanced //e, there's a switch in the motherboard (near to the
internal game port) that allows you to select between color and monochrome video
signal. When set to color, it outputs a complete color signal (that also
displays grayscale in a monochrome monitor). When set to monochrome, it outputs
a pure black and white signal ("colors" are rendered as a sucession of black and
white pixels instead of the equivalent gray). So it depends on the setting of
that switch.
But once again, I can only assure that for my //e. Maybe it's a feature only
found in European machines, or maybe it's in all models.
> So in summary, it sounds like I can hook up a color TV (that has a composite
> video-in port) straight to the composite video-out port of the IIc+ via an
> RCA-type cable and get color video without needing any additional hardware,
> but not high enough resolution to be able to read 80x24 text very well.
Yes, that's true. Most TVs won't display 80-column or DHGR modes correctly
because TVs only have a video bandwidth of about 5-6 Mhz and 80-column modes
require bandwitdths of at least 12-14 Mhz. But as James said, any monitor (even
a color one!) will display sharper text (even in 40-column modes) because of
their greather video bandwidth (often up to 17 Mhz - that's three times an
standard TV!) and finer picture tube.
In short: color TV = color display but only at 40 columns. Monochrome monitor =
sharp display at al modes but only at b&w. Color monitor = color and sharp
display at all modes! :-)
By the way, if you have a TV with an scart connector (you know - the trapezoid
one with 21 pines often found in the back of TVs, VCRs and DVDs) but not A/V
input (some sets have this problem), you can also use your computer by buying an
RCA-to-scart adapter or cable. This has allowed me to have a 21" color monitor
for playing with my vintage computers collection :-) .
Greetings,
Antonio Rodr�guez (Grijan)
<ftp://grijan.cjb.net:21000/>
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