UART Control
From SpecNext Wiki
| Port Number | $153B |
|---|---|
| Decimal | 5435 |
| Short desc. | Configuration of UART interfaces |
| Bit Mask | %0001 0101 0011 1011 |
| Readable | Yes |
| Writable | Yes |
| Subsystem | UART |
- bit 6 = 0 to select the esp uart, 1 to select the pi uart †
- bit 4 = 1 if the bits 2:0 are being written
- bits 2:0 = most significant bits of the 17-bit prescalar setting baud rate
pi gpio must be configured for uart, see NextReg:$A0
† either uart can be redirected to the joystick ports, see NextPort:$xx37
The remaining 14-bits of prescalar value can be written by NextPort:$143B