RGB and Cassette Ports
The RGB port supplies a composite RGB signal to any standard RGB monitor.
The Output is almost a direct output from the ULA except for a resistive network to both isolate the output and also suit the volatage levels to the recognised outputs.
The Cassette Port offers pins for Cassette in, Cassette out, Cassette Relay control and Sound Output.
Although the latter is provided here, connection to an external amplifier will not in itself disconnect the internal speaker. This requires the speaker to be physically disconnected from the ORIC motherboard.