137 Option23 Serial
137 : Option23 Serial
- Author: bitluni
- Description: Character ROM and bitmap shifter for POV displays
- GitHub repository
- Clock: 0 Hz
How it works
clock: clocks out character columns or shifts in data. Data is 8bits LSB first. Highest bit is ignored. Data = b01xxxxxx ASCII character no x + 32. data = b00xxxxxx bitmap column. under/over is underline and overline for all bitmap columns
How to test
Shift in some data and set din = 1111111 to clock out characters and graphics
External hardware
Pink LEDs
IO
| # | Input | Output |
|---|---|---|
| 0 | clock | led 0 |
| 1 | reset | led 1 |
| 2 | write | led 2 |
| 3 | din | led 3 |
| 4 | under | led 4 |
| 5 | over | led 5 |
| 6 | led 6 | |
| 7 | led 7 |