The 6.2 is a damn good board. You probably wont find a better one to build, as 6.3/6.5 is pretty rare.
How about 6.4?
I was digging around, looking at photos of my Amiga 2000 motherboard, and I believe it is a Rev 6.4. It has an 8375 / 318069-17 Agnus which
apparently is an A2000 Rev 6.4 part able to address 1MB CHIP RAM, and also an 8373 Super Denise (ECS) in regards to which, BBoAH notes:
Rev 6.4 ( ECS Denise introduced, last 6.x revision at A2000 End Of Sale* )
* An extremely late production (more likely a replacement A2000 issued under warranty), with Rev 6.4 clearly labeled, but the post-8372A production spare part (NTSC) 8375 Agnus w/318069-16 (and required mod), which came with an A2000C sticker on the rear of the case.
I purchased this system in Late 2000 from a forum post where someone had 30 or so NIB A2000 units with KS2.04 and was selling them at a reasonable price. There were three remaining and I ordered one. There was a delay shipping due to warehouse confusion and so the guy threw in an ASDG Dual Serial board at the end of it all. The system was in mint condition and appeared to have not been used before - zero dust. I have been using this system since. I currently have an A2620 (Commodore 68020 accelerator) installed, but I am trying to find a different option, as I need a hardware disable switch for the accelerator.
Pics of the system internalsbp
