UARTS and two conversion ROMs
Serial data in and see how it goes.
The ASCII is expected to come in/out from a USB-serial adapter. The baudot is a 60mA current loop so something hefty is required.
| # | Input | Output |
|---|---|---|
| 0 | ascii clock at 8x desired baudrate | segment a |
| 1 | baudot clock at 100x desired baudrate | segment b |
| 2 | baudot input, should be held high when line is idle but connected | segment c |
| 3 | segment d | |
| 4 | segment e | |
| 5 | segment f | |
| 6 | segment g | |
| 7 |