This adapter connects the Amiga's standard RGB connector to a 15kHz digital-RGB video monitor with a 9-pin connector. 23-Pin Female to 9 Pin Female Digital Diagram A1-A14 are pins 1-14 of a 74LS04 (hex inverter) IC chip. B1-B14 are pins 1-14 of another 74LS04 IC chip. C1 is a .1uf 16V ceramic capacitor.