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-
- CopperMaster © Copyright 1990 by Jonathan Potter
-
- CopperMaster provides an easy way to generate your own custom copper lists,
- and generally brighten up your screen.
-
- It runs only from the CLI, and takes one argument; the filename of a
- "copper list". This copper list is presented in the following manner :
-
- col x y rgb
- col x y rgb
- col x y rgb
- col x y rgb
- .
- .
- .
- .
-
-
- ad infinitum...
-
- col is the colour register to be changed; this is a value from 0 to 31. x and
- y are the x and y locations to make the change. Remember that the copper has
- a horizontal resolution of 113, and a vertical resolution of 262 lines in NTSC
- and 312 in PAL, but because there are only 8 bits of resolution for vertical
- beam positioning, you must have an instruction for line 255, and then
- additional instructions for line x-255 to reach lines greater than 256. That
- is, to set line 260 a certain colour, you must
-
- 0 0 255 fff this changes to fff at line 255
- 0 0 10 000 this changes to 000 at line 260 (256 + 10)
-
- rgb is a hex value representing the colour you wish to change to.
-
- If you run Copper Master with no filename, it will reset any previous
- changes to the copper list.
-
-
- Jonathan Potter
- P.O. Box 289
- Goodwood, SA 5034
- Australia
- Phone : (08) 2932788
-