Amiga 1000 (Possible Daphne Version)

[Matt_H]

The daughter board is what would become the Gary chip in later Amigas.

According to On The Edge, Daphne was the version of the video chip before the HAM modes were implemented (though I've never heard this confirmed anywhere else). So I guess find some HAM software and see if it fails.

[Matt_H]

All Amigas have the HAM mode (4096 colours), it's the EHB mode (64 colours) that some early A1000s didn't have.

Boot up Dpaint to confirm this.

Yeah. This sounds far more likely.