September 18, 2018 Other than the RS-232, is there any other way of interfacing to the Amulet monochrome hardware? By FAQs › Category: GEMstudio Pro › Other than the RS-232, is there any other way of interfacing to the Amulet monochrome hardware? 0 Vote Up Vote Down Amulet Staff asked 6 years ago Yes. The Graphical OS Chip has 3.3v CMOS level UART pins which are connected to the RS-232 transceiver chip. A direct connection to these pins can be made, thus bypassing the RS-232 transceiver chip. Please login or Register to submit your answer Username or Email Address Password Remember Me Share