#6, 7 are ULAs

 Here's 6:

Touching up the die revealed an ID:

Here's 7:

Sea of gates, uncommitted logic array, or whatever the cool kids use these days.  See for example: http://stardot.org.uk/forums/viewtopic.php?t=8539

These will need layout extracted to emulate.  While this is doable (ex: http://visual6502.org), its a lot of work with current polygon capture tools.  Additionally, emulating the logic may require a different workflow than used by ROM emulators.