[Prev] [Next] [Contents] [Commodore] [New] [Search] [Home]

                  +-+-+-+ +-+ +-+-+-+-+
                  |7|6|5| |4| |3|2|1|0|
                  +-+-+-+ +-+ +-+-+-+-+   BAUD RATE
                   | | |   |  +-+-+-+-+----------------+
     STOP BITS ----+ | |   |  |0|0|0|0| USER RATE  [NI]|
                     | |   |  +-+-+-+-+----------------+
  0 - 1 STOP BIT     | |   |  |0|0|0|1|       50 BAUD  |
  1 - 2 STOP BITS    | |   |  +-+-+-+-+----------------+
                     | |   |  |0|0|1|0|       75       |
                     | |   |  +-+-+-+-+----------------+
                     | |   |  |0|0|1|1|      110       |
                     | |   |  +-+-+-+-+----------------+
    WORD LENGTH -----+-+   |  |0|1|0|0|      134.5     |
                           |  +-+-+-+-+----------------+
 +---+-----------+         |  |0|1|0|1|      150       |
 |BIT|           |         |  +-+-+-+-+----------------+
 +-+-+    DATA   |         |  |0|1|1|0|      300       |
 |6|5|WORD LENGTH|         |  +-+-+-+-+----------------+
 +-+-+-----------+         |  |0|1|1|1|      600       |
 |0|0|  8 BITS   |         |  +-+-+-+-+----------------+
 +-+-+-----------+         |  |1|0|0|0|     1200       |
 |0|1|  7 BITS   |         |  +-+-+-+-+----------------+
 +-+-+-----------+         |  |1|0|0|1|    (1800)  2400|
 |1|0|  6 BITS   |         |  +-+-+-+-+----------------+
 +-+-+-----------+         |  |1|0|1|0|     2400       |
 |1|1|  5 BITS   |         |  +-+-+-+-+----------------+
 +-+-+-----------+         |  |1|0|1|1|     3600   [NI]|
                           |  +-+-+-+-+----------------+
                           |  |1|1|0|0|     4800   [NI]|
       UNUSED -------------+  +-+-+-+-+----------------+
                              |1|1|0|1|     7200   [NI]|
                              +-+-+-+-+----------------+
         Figure 6-1.          |1|1|1|0|     9600   [NI]|
    Control Register Map.     +-+-+-+-+----------------+
                              |1|1|1|1|    19200   [NI]|
                              +-+-+-+-+----------------+
<control register>- Is a single byte character (see Figure 6-1, Control Register Map) required to specify the baud rates. If the lower 4 bits of the baud rate is equal to zero (0), the <opt baud low><opt baud high> characters give you a rate based on the following:
   <opt baud low>=<system frequency/rate/2-100-<opt baud high>*256
   <opt baud high>=INT((system frequency/rate/2-100)/256

[Prev] [Next] [Contents] [Commodore] [New] [Search] [Home]
This page has been created by Sami Rautiainen.
Read the small print. Last updated May 20, 1998.