Hast du schonmal das PRog aus dem Help-File ausprobiert?

Das weicht in sachen Pariety-Bit und Stopbit etc. schon voneinander ab, aber das hängt ja von deinem Terminal-prog ab.

Code:
'----------------------------------------------------------------------
'                         serin_out.bas
'                    (c) 2003 MCS Electronics
' demonstration of DYNAMIC software UART
'----------------------------------------------------------------------

'tip : Also look at OPEN and CLOSE

'tell the compiler which XTAL was used
$crystal = 4000000

'tell the compiler which chip we use
$regfile = "2313def.dat"

'some variables we will use
Dim S As String * 10
Dim Mybaud As Long
'when you pass the baud rate with a variable, make sure you dimesion it as a LONG

Mybaud = 19200
Do
  'first get some data
  Serin S , 0 , D , 0 , Mybaud , 0 , 8 , 1
  'now send it
  Serout S , 0 , D , 1 , Mybaud , 0 , 8 , 1
  '                                      ^ 1 stop bit
  '                                  ^---- 8 data bits
  '                                ^------ even parity (0=N, 1 = E, 2=O)
  '                        ^-------------- baud rate
  '                  ^-------------------- pin number
  '               ^----------------------- port so PORTA.0 and PORTA.1 are used
  '           ^--------------------------- for strings pass 0
  '      ^-------------------------------- variable
  Wait 1
Loop
End