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1 <appendix>
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2 <title>Using the Serial Interface</title>
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3 <para>
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4 For those who wish to use the serial port, the input or
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5 output path of a program may be redirected to the serial port of
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1011
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6 your &make;.
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142
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7 </para>
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8 <para>
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9 This is done by including the following module in the OS-9 kernel:
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10 </para>
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11 <literallayout>
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12 ACIA51 - Serial Device Driver
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13 </literallayout>
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14 <para>
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15 To load this module into the kernel enter the following command line:
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16 </para>
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17 <literallayout>
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18 LOAD /D0/CMDS/ACIA51
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19 </literallayout>
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20
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21 <section>
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22 <title>Serial Printer Implementation</title>
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23 <para>
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24 For those with a serial printer, you can use the serial port
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25 in the redirection of a program's output path by including the
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26 following modifier at the end of a command line:
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27 </para>
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28 <literallayout>
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29 >/P1
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30 </literallayout>
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31 <para>
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32 The baud rate of the serial port may be changed as follows:
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33 </para>
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34 <literallayout>
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35 XMODE /P1 BAUD=3
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36 </literallayout>
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37 <para>
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38 This will change the baud rate to 1200 characters per second.
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39 For a detailed description of the baud rate see the XMODE
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40 command description.
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41 </para>
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42 </section>
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43 <section>
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44 <title>Serial Terminal Implementation</title>
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45 <para>
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46 For those who wish to connect two &make;s, running
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47 OS-9, together using the serial port, redirection of the input
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48 or output paths is possible using the following modifier at
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49 the end of a command line:
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50 </para>
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51 <literallayout>
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52 >/T1 - for an output path
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53 </literallayout>
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54 <literallayout>
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55 </T1 - for an input path
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56 </literallayout>
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57 <para>
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58 To pass a file of data between the two computers, one must be
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59 configured for input from the serial port and the other
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60 configured for output:
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61 </para>
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62 <literallayout>
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63 Computer 1, BUILD TEXT </T1 - input to port
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64 </literallayout>
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65 <literallayout>
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66 Computer 2, BUILD <TEXT /T1 - output to port
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67 </literallayout>
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68 <para>
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69 Using the above example, the text file on computer 2 will be
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70 transferred to a file called TEXT on computer 1.
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71 </para>
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72 <para>
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73 When the command line is entered on computer 1, the system will
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74 reply with a question mark and wait for information from the
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75 serial port. The command line on computer 2 will send data to
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76 the now waiting computer 1. A string of question marks will now
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77 be seen, this is the number of lines sent and recieved by the
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78 respective computers.
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79 </para>
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80 <para>
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81 To create a log-off sequence after such a transfer, use the DISPLAY
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82 command as follows:
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83 </para>
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84 <literallayout>
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85 Computer 1, BUILD <TEXT /T1 ; DISPLAY 0A 0D >/T1
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86 </literallayout>
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87 </section>
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88 </appendix>
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