Does the Macintosh IIsi built-in video provide a convolution filter like
the Macintosh Display Card 8*24 GC does?
Only the Macintosh Display Card 8*24 GC and the Macintosh Quadra computers
provide a convolution filter for the video signal. It is not available on
any other product.
A convolution filter is used to stabilize flicker rate on monitors.