How fast is the highest speed for serial port?
For a vanilla 100/200LX, the maximum speed for the internal UART (8250 serial port controller implemented in the 100/200LX) is 19200bps. With a buffered UART, (NS16550, implemented in many PCMCIA modems) speeds up to 115200bps work fine. Note: this does not mean that 100/200LX can actually send data at 115200bps. It means that palmtop can RECEIVE data at 115200bps, without lossage. For a 100/200LX with double-speed crystal, 38400bps seems to be the maximum speed with the internal UART. Your milage may vary depending on the communication software you are using. Try using communication software with a very good interrupt handler implementation. If you can read Japanese, you may want to try siam available at:
