COLOUR TESTCARD GENERATOR
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Original Design
New Fangled Designed in Sept 2001
64x20 Character Field (52x18 Visible, Can be 52x19)
128 Characters (7 reserved for Syncs & Reset)
8x16 Character Bitmap
8 Foreground Colours
8 Background Colours
Syncs with resolution of 125ns
Field Reset with resolution of 125ns
Non-Interlaced (odd or even selectable) and Interlaced
Page Selector RESET and INCREMENT (active to ground)
Teletext Input DATA and GATE (inverted)
Each of the 128 Characters have 2 sets of Foreground and Background Colours
No Control Characters required in picture
Modern RGB to PAL IC (no external delay lines required)
It is Possible to do a small amount of Animation using several pages up to 16
Lower Supply Current only 85m/A (so it is GREEN...HI)
Needs only 8 to 14 Volts Supply DC.( ~1 Watt)
The MACH4 is protected from being copied....!
Also The Eprom....
Can Import old style EPROM data (HEX) and convert it to the New Standard
Auto Increment on ANIMATION done at Eprom built time
Small enough to fit in most TX's its only 2.5" x 2.5"
No links either !
Easy PC based page program to build, fill, import and export
PAL output 75ohms (was B/W back in 1983).
Luminance Output 75 ohms
Chrominance Output 75 ohms
Thus "S" video is possible
With slight mods at build time can do NTSC but it would require new Software/Xtal
All Synchronous does not suffer from timing delays
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Final Version 2.5"X 2.5"
Below is the Fully Interlaced Picture result.
Now only 2.5" Square
85m/A and runs off 8-14V supply
So its GREEN