AMIGAZ wrote:
The A500+ also has ECS graphics
Yes you can use a 1.3 kickstart chip in an A500+.
The last revisions (6A/7) of the regular A500 also had ECS Denise (and KS 2.04), AFAIK. So the difference between those and a A500+ is basically "only" the Agnus, the standard chipmem size, some PCB differences, that 2MB chipmem doesn't require Gary connection on the A500+ and that the Plus also has an on-board clock battery (prone to leak).