Hello,
It looks like the first NA releaase of the A2000 Motherboard.
The Rev 4.0's were very rare. Be thankful it's not a B2000 German Motherboard (only avail in Canada and Germany never releaaed in the US - that board only supported a 512KB Agnus Chip and couldnt be upgraded.)
I thinks the ROMs are for Kickstart 1.1.
All the later A2000/500 ROMs were a single chip using a larger pin array.
Shaf
