)
Values for 8514/A mix:
 00h	retain previous mix
 01h	source OR destination
 02h	source
 04h	source XOR destination
 05h	leave as-is
 06h	max(source,destination)
 07h	min(source,destination)
 08h	source+destination (clipped)
 09h	destination-source (clipped to zero)
 0Ah	source-destination (clipped to zero)
 0Bh	average source and destination
 10h	zero destination
 11h	source AND destination
 12h	source AND NOT destination
 13h	source
 14h	NOT source AND destination
 15h	leave as-is
 16h	source XOR destination
 17h	source OR destination
 18h	NOT source AND NOT destination
 19h	NOT (source XOR destination)
 1Ah	NOT destination
 1Bh	source OR NOT destination
 1Ch	NOT source
 1Dh	NOT source OR destination
 1Eh	NOT source OR NOT destination
 1Fh	set all bits of destination