stella

A multi-platform Atari 2600 Emulator

2600 atari atari-2600 atari2600 emulation emulator emulators

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bwmott c3aa637f8a Modified the TIA emulation so that it supports the PAL color loss effect. Color loss occurs when the previous frame contains an odd number of scanlines. The color loss effect is implemented using an idea from Eckhard Stolberg: "I thought you could have each colour twice in the palette. In the PAL palette the second colour would only be a shade of grey. Then when something gets written to the TIA colour registers, you could set bit0 of the colour according to bit0 of the scanline counter for the last frame. That way an odd number of lines would select the grey tones, while an even number would select the normal colours." git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@57 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba	2002-03-28 05:10:17 +00:00
CVSROOT	Add syncmail as a admin file to checkout.	2001-12-27 20:02:13 +00:00
stella	Modified the TIA emulation so that it supports the PAL color loss	2002-03-28 05:10:17 +00:00

bwmott c3aa637f8a Modified the TIA emulation so that it supports the PAL color loss

effect.  Color loss occurs when the previous frame contains an odd
number of scanlines.

The color loss effect is implemented using an idea from Eckhard
Stolberg: "I thought you could have each colour twice in the palette.
In the PAL palette the second colour would only be a shade of
grey. Then when something gets written to the TIA colour registers,
you could set bit0 of the colour according to bit0 of the
scanline counter for the last frame. That way an odd number of lines
would select the grey tones, while an even number would select the
normal colours."


git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@57 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba

2002-03-28 05:10:17 +00:00

CVSROOT

Add syncmail as a admin file to checkout.

2001-12-27 20:02:13 +00:00

stella

Modified the TIA emulation so that it supports the PAL color loss

2002-03-28 05:10:17 +00:00