Changes

Enabled mostly 320x200 display with a palette of 4 colours choosen between 4 combinations (only one colour to be chosen) from 16 total colours. Could It also get offered a text mode with character attribute based 16 colours display.  On composite monitors or TVs, composite output enabled artifact-based NTSC colour emulation, simulating more colours (typically 16 colours simultaneously, but up to 1024 colours have been demonstrated).