Changes
Made by [[Campursoft|Campursoft]]
Designed by Steve Hammond.
== Quality ==
The following are my experience. It is worth pointing out that all the equipment has aged and that I may not be using the most optimal cables and compatible display.
On a modern flat screen LCD television the image quality from the Videomaster is worse than the SCART cables you can buy and worse than a native green screen or colour monitor. (This is using a composite to SCART cable).
Mode 0 is fine, mode 1 is useable, but mode 2 is hard to read. This is down to ghosting in the image. With the yellow on blue the ghosting is black. I (arnoldemu) have seen similar when using the SCART output from a KC Compact on a television . I believe the modern televisions are much less tolerant, so it may be that the signals are not acceptable to the modern TV.
The colour reproduction is good although bright white is a little dull for me. My television also has trouble with bright green in that there is visible moving dot crawl around the edges. There is also some noticeable banding between main display and border when the border colour is different from the main area.
Like the SCART, register 3 scrolling can be used (use values 5/6 for hsync length - any lower and the picture loses sync), and like the SCART if you try to use lower hsync lengths and if the border is not black then the main display will become darker.
It has also happened that when I program the television looses sync so that the television can't accept it and when you then re-sync program it back to the default the picture is black and white with noticeable dot crawl all over it. I don't see this with a SCART cable.
Turning L1 doesn't seem to do anything.
NOTE:
* I don't have other CRTs or flatscreens to compare it on, so I may have been unlucky.
* I am still investigating how to get a better picture out of the Videomaster because I still believe it's possible.
* Unfortunately I am unable to compare this with Amstrad's modulator which it claims to be superior to.
== Technical ==
IC1 TEA2000 (PAL/NTSC Colour Encoder supporting 64 colours)
RV1 variable resistor- turning this controls brightness VC1 variable resistor- turning this controls colour (too far to the left or right and you get black/white, when colour appears, turning it can result in colour movement in one direction, then stable and then in the other direction). L1 variable resistor- unknown operation. it doesn't seem to do anything.
== Pictures ==
[[image:Vm-h3.jpg|none|left|thumb|200px|SCART cable of VideoMaster]]
[[image:VideoMasterComposite.JPG|none|left|thumb|200px|Output on a Sony Trinitron 14" CRT television]]
[[image:VideoMasterColours.jpg|none|left|thumb|200px|Mode 0, Inks 10-25 on a Sony Trinitron 14" CRT television]]
== User Manual ==
