Feature-wise it was Daphne without EHB, but I believe it was Denise when they rolled it out...
Some of the earliest Amiga 1000's shipped in the U.S. had the non-EHB Denise.
You should be able to swap it with no problem, according to this thread:
http://eab.abime.net/showthread.php?p=413514I can confirm that I did have an ntsc A1000 with the non-halfbright denise chip. I dont know how early it was because I got it used. All I did was swap out the denise for a newer one and halfbright worked.
EHB was available in OCS, it wasn't an ECS feature...
There are very few games that actually use it from what I can see-online.
desiv