[duskwuff]

HyperCard did some particularly weird things to draw to the screen quickly on older machines. If you try dragging a HyperCard stack window around, you'll notice that its horizontal position is quantized to 8-pixel increments, probably to accelerate drawing on low-bit-depth displays. :)

[klodolph]

Yes, that’s something you’ll need to do if you want to stay on the fast path :-)

The Motorola 68000 does not have a barrel shifter. You want to shift by 4 bits? That’s four cycles, buddy! Avoiding shifts keeps you on the fast path for CopyBits().