Re: Amiga 1084 monitor

[jefbla@bconnex.net (Jeff Blakeney)]

On Mon, 06 Oct 1997 23:15:18 +0100, gospodin@indigo.ie (Vincent Quinn)
wrote:

>As part of the payment for helping someone set up a Windoze NT
>server/PC/Mac network, I've been given an Amiga/Commodore 1084 monitor for
>my IIGS :-))
>Can anyone give me the low-down on it?
>
>First its switches and inputs: looking at the rear and working from left
>to right, there are:
>(1) a pushbutton switch marked CVBS/LCA - what does this do?

It switches the mode of the three RCA inputs between composite video
(both colour and brightness in the same connector) and the Commodore
64s chroma/luma signals (colour and brightness are on separate RCA
connectors).

My 1084 has a three position switch with Composite, Digital RGB and
Analog RGB settings.

>(2) three RCA inputs, in a triangle: the top one is coloured red and
>marked C (for composite???);the left is yellow and marked CVBS/L; the
>right is white and marked A Audio (that's self-explanatory?)

C is indeed for composite video, the CVBS/L is used for the luma
signal from a C-64 and you got the audio one right too.  I think the
CVBS/L can also be used with composite video to set the black level or
have something to do with the blanking signal.

>(3) an eight-pin DIN input, marked TTL RGB

For digital RGB such as CGA or EGA from IBM XT type machines, RGB
cards for //es and //cs and I think the PC Transporter outputs digital
RGB as well.

>(4) there is a blanked-off DIN position (nothing on the board behind it
>either); the case is marked linRGB

You got me here, my 1084 has a 9 pin sub D (like a joystick connector)
for the analog RGB in.

>(5) a standard 20-pin-and-shield SCART socket

Probably the analog RGB input possibly with more features than a IIgs
can produce.

>(6) finally, a pushbutton switch marked VCR.

Having this enabled changes some of the video filtering so that
composite video from a VCR will look a little better.

My 1084 doesn't have this switch.

>On the front next to the adjustment knobs is a further pushbutton switch
>for selecting between CVBS and RGB.

Switches between the composite video and RGB inputs.  You can have
your IIgs plugged into the RGB input and your //c plugged into the
composite video input and switch between them using this switch.

Sorry, I can't help with the PC Transporter question.

>Also, using any of the inputs/switch settings, is there any way the 1084
>can be connected to an Apple //c, either directly or by using the RF
>modulator that attaches to the //c colour output port? Having a //c colour
>display would be a real plus.

Just plugged the composite video out of the //c into the composite
video in of the 1084 like I mentioned above.

I have also heard of an add on for the //c that will generate digital
RGB output which you could plug into the DIN connector.