> The port link is, calculated very optimistically, at > least about 64 times slower than the z80 can transfer > values from a register to memory. In that case, the most viable solution is the screen. The video memory might just be able to run at 10mbps. All you'd need is a calc with the overhead-addon and a device to spread the data out over the entire video memory. Then again, there is absolutely no reasonable purpose for this.